50295 + Interview Questions in Secondary School in Biology

1.	Males produce sperm and females begin to ovulate in response to
Answer» EXPLANATION: to PRODUCE BABY................

1.

Males produce sperm and females begin to ovulate in response to

Answer»

EXPLANATION:

to PRODUCE BABY................

Discussion

2.	Many desert animal are exceptionally
Answer» ANSWER: bro RIGHT the QUESTION CORRECTLY and full

2.

Many desert animal are exceptionally

Answer»

ANSWER:

bro RIGHT the QUESTION CORRECTLY and full

Discussion

3.	What would be the consequences of a deficiency of haemoglobin in our bodies?
Answer» ANSWER: we will not be ABLE to supply sufficient amount of o2 to our body CELLS thus we will be fatigue and if not treated PROPERLY then we will DIE

3.

What would be the consequences of a deficiency of haemoglobin in our bodies?

Answer»

ANSWER:

we will not be ABLE to supply sufficient amount of o2 to our body CELLS thus we will be fatigue and if not treated PROPERLY then we will DIE

Discussion

4.	About circular system
Answer» The circulatory system, also CALLED the cardiovascular system or the VASCULAR system, is an organ system that permits BLOOD to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, CARBON dioxide, hormones, and blood cells to and from the cells in the BODY to provide nourishment and help in ...

4.

About circular system

Answer»

The circulatory system, also CALLED the cardiovascular system or the VASCULAR system, is an organ system that permits BLOOD to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, CARBON dioxide, hormones, and blood cells to and from the cells in the BODY to provide nourishment and help in ...

Discussion

5.	Trached on38. State two functions of large intestine of man.39. What is source of bile juice ?40. What are two functions of bile juice ?41. Which type of nutrition is found in man?42. Where does protein digestion start in man?43. What is the site of completion of digestion aabsorption in man?44. Define villi.45. Name causative agent of dental caries.46. State a preventive measure against dental caries47. Define assimilation.48. Name the structures of Amoeba which helpingestion.49. Name the most common method of ingestion in Am50. Why is food vacuole of Amoeba called tempostomach ?51. Name the structures present in the buccal cavity of r52. Define peristalsis.53. Which part of alimentary canal is adaptedcomplete digestion and absorption of food ?4. How many salivary glands are present in man
Answer» Answer: Hope it HELPS you Plz MATK it as BRAINLIEST 49 question is not clear

5.

Trached on38. State two functions of large intestine of man.39. What is source of bile juice ?40. What are two functions of bile juice ?41. Which type of nutrition is found in man?42. Where does protein digestion start in man?43. What is the site of completion of digestion aabsorption in man?44. Define villi.45. Name causative agent of dental caries.46. State a preventive measure against dental caries47. Define assimilation.48. Name the structures of Amoeba which helpingestion.49. Name the most common method of ingestion in Am50. Why is food vacuole of Amoeba called tempostomach ?51. Name the structures present in the buccal cavity of r52. Define peristalsis.53. Which part of alimentary canal is adaptedcomplete digestion and absorption of food ?4. How many salivary glands are present in man

Answer»

Answer:

Hope it HELPS you

Plz MATK it as BRAINLIEST

49 question is not clear

Discussion

6.	Briefly discuss the traditional methods of sowing of seed
Answer» Answer: the seeds such as maize where kept separate for the next sowing. The first step of sowing seeds is :it is to clear the land *second* step: is to BREAK down the hard CRUMBS of soil *THIRD* *water* is *given* to *land* *and* *seeds* *are* *down* *and* *then* *after* *the* *completion* of *TIME* *period* *the* *crops* *are* *ready* *and* *are* *harvested* *hope* it *HELPS* *you* *plz* *mark* as *brainliest*

6.

Briefly discuss the traditional methods of sowing of seed

Answer»

Answer:

the seeds such as maize where kept separate for the next sowing. The first step of sowing seeds is :it is to clear the land second step: is to BREAK down the hard CRUMBS of soil THIRD water is given to land and seeds are down and then after the completion of TIME period the crops are ready and are harvested

hope it HELPS you plz mark as brainliest

Discussion

7.	give a brief account on aerobic and anaerobic respiration with chemical equation in a detailed manner
Answer» ANSWER: AEROBIC respiration: The oxidative breakdown of respiratory substances is called aerobic respiration. The chemical reaction of aerobic respiration is as follows: Glucose gives pyruvic acid in presence of O2 in cytosole by the process of glycolysis. Then the pyruvic acid CONVERT into CO2+ H2O +energy in mitochondria in presence of O2. Examples are some MULTICELLULAR organism Anaerobic Respiration: oxidation of respiratory substances in absence of O2 is called an anaerobic Respiration. The chemical reaction of anaerobic Respiration is as follows: Glucose gives pyruvic acid in presence of O2 in cytosole by the process of glycolysis. Then the pyruvic acid convert into CO2 +C2H5PH(Ethyl alcohol) +energy in yeast in the absence of O2 by process of fermentation . Examples are yeast, muscle cells and some prokaryotes.

7.

give a brief account on aerobic and anaerobic respiration with chemical equation in a detailed manner

Answer»

ANSWER: AEROBIC respiration:

The oxidative breakdown of respiratory substances is called aerobic respiration.

The chemical reaction of aerobic respiration is as follows:

Glucose gives pyruvic acid in presence of O2 in cytosole by the process of glycolysis. Then the pyruvic acid CONVERT into CO2+ H2O +energy in mitochondria in presence of O2.

Examples are some MULTICELLULAR organism

Anaerobic Respiration: oxidation of respiratory substances in absence of O2 is called an anaerobic Respiration.

The chemical reaction of anaerobic Respiration is as follows:

Glucose gives pyruvic acid in presence of O2 in cytosole by the process of glycolysis. Then the pyruvic acid convert into CO2 +C2H5PH(Ethyl alcohol) +energy in yeast in the absence of O2 by process of fermentation .

Examples are yeast, muscle cells and some prokaryotes.

Discussion

8.	How mutational breeding is used in increasing the production of crops?
Answer» ANSWER: Explanation: By MUTATIONAL breeding, we can CREATE different VARIETIES of crops as mutation is the change of the genetic makeup of an organism. This acts as a benefit for the production of crops.

8.

How mutational breeding is used in increasing the production of crops?

Answer»

ANSWER:

Explanation:

By MUTATIONAL breeding, we can CREATE different VARIETIES of crops as mutation is the change of the genetic makeup of an organism. This acts as a benefit for the production of crops.

Discussion

9.	Name two structure and plant where waste products get accumulated ůrgenț
Answer» EXPLANATION: These WASTE PRODUCTS are removed through stomata in leaves and lenticels in STEMS

9.

Name two structure and plant where waste products get accumulated ůrgenț

Answer»

EXPLANATION:

These WASTE PRODUCTS are removed through stomata in leaves and lenticels in STEMS

Discussion

10.	Brief short note on lamarckism
Answer» Explanation: Lamarckism (also called Lamarckian evolution) is a hypothesis regarding evolution. Evolution tries to explain how species change over time. Today, the only widely accepted theory of evolution is that DEVELOPED from the ideas of Charles Darwin. Lamarckism was developed by Jean-Baptiste de Lamarck. He based his ideas, to some extent, on those of Erasmus Darwin, the grandfather of Charles Darwin. Lamarckism says that individuals do not only pass on the THINGS they received from their parents, but also some things they experienced during their lifetime. As an example, he cited giraffes. Giraffes, which have long necks, must have evolved from ancestors with much shorter necks. His IDEA was that adults needed to STRETCH their NECK to reach leaves from high branches. Therefore, he thought, the children inherited longer necks. This idea is called the inheritance of acquired characteristics. Although Darwin did not entirely break with these ideas, his characteristic idea of natural selection relates to the individuals's relative survival and success in reproduction. Better adapted forms leave, on average, more offspring. This changes the proportion of alleles in the population.

10.

Brief short note on lamarckism

Answer»

Explanation:

Lamarckism (also called Lamarckian evolution) is a hypothesis regarding evolution. Evolution tries to explain how species change over time. Today, the only widely accepted theory of evolution is that DEVELOPED from the ideas of Charles Darwin.

Lamarckism was developed by Jean-Baptiste de Lamarck. He based his ideas, to some extent, on those of Erasmus Darwin, the grandfather of Charles Darwin. Lamarckism says that individuals do not only pass on the THINGS they received from their parents, but also some things they experienced during their lifetime. As an example, he cited giraffes. Giraffes, which have long necks, must have evolved from ancestors with much shorter necks. His IDEA was that adults needed to STRETCH their NECK to reach leaves from high branches. Therefore, he thought, the children inherited longer necks. This idea is called the inheritance of acquired characteristics.

Although Darwin did not entirely break with these ideas, his characteristic idea of natural selection relates to the individuals's relative survival and success in reproduction. Better adapted forms leave, on average, more offspring. This changes the proportion of alleles in the population.

Discussion

11.	Transport system in plants called
Answer» xylem The transport system in plants consists of bundles of TUBES in the stem, BRANCHES and roots. These tubes are called xylem and PHLOEM. The MAIN function of xylem is to transport WATER and dissolved minerals from the roots to rest of the plant body. please mark brainliest

11.

Transport system in plants called

Answer»

xylem

The transport system in plants consists of bundles of TUBES in the stem, BRANCHES and roots. These tubes are called xylem and PHLOEM. The MAIN function of xylem is to transport WATER and dissolved minerals from the roots to rest of the plant body.

please mark brainliest

Discussion

12.	A high fiber dish with the ingredients and steps followed while preparing.
Answer» Answer: 1. Cut down on fats If frying, use a good non-stick pan and dry fry (e.g. in the case of mince). Leaving out the oil could cut 45 calories per teaspoon in your meal. If your food is drying out, don’t add more oil, add a little water. Use fats and oils that are high in good fats (poly- and mono-unsaturated fats), e.g. olive oil and try using less than the recipe suggests. steak with garnish2. Cut down on SALT Most recipes indicate that you need to add salt. Replace salt with alternative seasonings such as pepper, herbs, spices, lemon juice, vinegar or mustard. Allow people to season their own food after tasting it - they are likely to add less. You could be eating more salt then you think, use our salt calculator to find out how much salt really is in your food. 3. Cut down on sugar Experiment by using less sugar when you bake – most cakes will work even if the quantity of sugar in the recipe is halved. Items such as fruit cakes, fruit scones and tea breads can be made without adding sugar as the dried fruit will provide sweetness. 4. Increase fibre Use brown alternatives of rice, pasta and bread to increase the fibre content of recipes which will help you feel fuller for longer. Instead of using all plain white flour in recipes, use a mix of wholemeal and plain flour when baking, e.g. when making apple crumble – you can also add porridge oats to make the top crunchy and add more fibre! Top dishes usually requiring pastry, such as chicken pie, with mashed potato instead. chunky soup5. Soups and stews Allow your broth, stew or soup to cool and skim off the fat that gathers on top of the liquid. Replacing some of the traditional fatty meats in stews with pulses like peas, beans and lentils can SAVE calories and fat as well as adding fibre. 6. Sauces and dips Replace cream, whole milk and sour cream with semi-skimmed and skimmed milk, or low fat yoghurt. Low fat yoghurt and fromage frais can be used on hot or cold puddings and in dips instead of cream, double cream or Greek yoghurt. Fromage frais is fresh, skimmed cow’s milk cheese but is more like natural yoghurt. It is not suitable for use in cooking. 7. Cheese Use strongly flavoured cheeses like mature cheddar or blue cheese in savoury dishes - you can use less and still get all the flavour. If you don’t like the strong taste of such cheeses simply use low fat alternatives of your favourites. Grate cheese instead of slicing as it will spread across a dish more easily and you can use less. Replace cream cheese with low fat cream cheese. 8. Mayonnaise Replace mayonnaise in salads with natural yoghurt or low fat fromage frais.Better still, try using vinaigrette dressings and serving them on the side. When making SANDWICHES, choose mayonnaise or butter, not both. a sir fry and wooden spoon9. Vegetables Flavour cooked vegetables with herbs instead of butter or oil. Replace some meat in dishes such as shepherd’s pie, casseroles and lasagne, with vegetables and pulses (peas, beans and lentils). It is a great way to disguise vegetables for those fussy eaters. 10. Meat Trim the fat from meat and remove the skin from POULTRY before cooking. Then bake, grill, microwave, roast or POACH instead of frying it. When roasting, place the meat on a grill rack – this allows the fat to drip away. If you are cooking minced meat, brown it and drain away the fat before adding other ingredients.

12.

A high fiber dish with the ingredients and steps followed while preparing.

Answer»

Answer:

1. Cut down on fats

If frying, use a good non-stick pan and dry fry (e.g. in the case of mince). Leaving out the oil could cut 45 calories per teaspoon in your meal. If your food is drying out, don’t add more oil, add a little water. Use fats and oils that are high in good fats (poly- and mono-unsaturated fats), e.g. olive oil and try using less than the recipe suggests.

steak with garnish2. Cut down on SALT

Most recipes indicate that you need to add salt. Replace salt with alternative seasonings such as pepper, herbs, spices, lemon juice, vinegar or mustard. Allow people to season their own food after tasting it - they are likely to add less. You could be eating more salt then you think, use our salt calculator to find out how much salt really is in your food.

3. Cut down on sugar

Experiment by using less sugar when you bake – most cakes will work even if the quantity of sugar in the recipe is halved. Items such as fruit cakes, fruit scones and tea breads can be made without adding sugar as the dried fruit will provide sweetness.

4. Increase fibre

Use brown alternatives of rice, pasta and bread to increase the fibre content of recipes which will help you feel fuller for longer. Instead of using all plain white flour in recipes, use a mix of wholemeal and plain flour when baking, e.g. when making apple crumble – you can also add porridge oats to make the top crunchy and add more fibre! Top dishes usually requiring pastry, such as chicken pie, with mashed potato instead.

chunky soup5. Soups and stews

Allow your broth, stew or soup to cool and skim off the fat that gathers on top of the liquid. Replacing some of the traditional fatty meats in stews with pulses like peas, beans and lentils can SAVE calories and fat as well as adding fibre.

6. Sauces and dips

Replace cream, whole milk and sour cream with semi-skimmed and skimmed milk, or low fat yoghurt. Low fat yoghurt and fromage frais can be used on hot or cold puddings and in dips instead of cream, double cream or Greek yoghurt. Fromage frais is fresh, skimmed cow’s milk cheese but is more like natural yoghurt. It is not suitable for use in cooking.

7. Cheese

Use strongly flavoured cheeses like mature cheddar or blue cheese in savoury dishes - you can use less and still get all the flavour. If you don’t like the strong taste of such cheeses simply use low fat alternatives of your favourites. Grate cheese instead of slicing as it will spread across a dish more easily and you can use less. Replace cream cheese with low fat cream cheese.

8. Mayonnaise

Replace mayonnaise in salads with natural yoghurt or low fat fromage frais.Better still, try using vinaigrette dressings and serving them on the side. When making SANDWICHES, choose mayonnaise or butter, not both.

a sir fry and wooden spoon9. Vegetables

Flavour cooked vegetables with herbs instead of butter or oil. Replace some meat in dishes such as shepherd’s pie, casseroles and lasagne, with vegetables and pulses (peas, beans and lentils). It is a great way to disguise vegetables for those fussy eaters.

10. Meat

Trim the fat from meat and remove the skin from POULTRY before cooking. Then bake, grill, microwave, roast or POACH instead of frying it. When roasting, place the meat on a grill rack – this allows the fat to drip away. If you are cooking minced meat, brown it and drain away the fat before adding other ingredients.

Discussion

13.	How legumes are farmers',friend
Answer» Answer: here U go Explanation: its BCZ they help in nitrogen fixation

13.

How legumes are farmers',friend

Answer»

Answer:

here U go

Explanation:

its BCZ they help in nitrogen fixation

Discussion

14.	There are two view red blood cells in the body due to iron deficency
Answer» The Role of Red Blood Cells in Anemia. Red blood cells carry HEMOGLOBIN, an iron-rich protein that attaches to OXYGEN in the lungs and carries it to TISSUES throughout the body. Anemia OCCURS when you do not have enough red blood cells or when your red blood cells do not FUNCTION properly.

Discussion

15.	The enzyme which digest protein is _______
Answer» ANSWER: PEPSIN is the ENZYME which DIGEST PROTEIN.

15.

The enzyme which digest protein is _______

Answer»

ANSWER:

PEPSIN is the ENZYME which DIGEST PROTEIN.

Discussion

16.	Cdeggssfgxdcbuydcjjccbjtfvjhdccjtf
Answer» I can't UNDERSTAND your LANGUAGE

Discussion

17.	What do the 3R's refer to save the environment?which is one of these would be the best for environment
Answer» Answer: 1- RECYCLE 2- Reuse 3- REDUCE Reduce is BEST for ENVIRONMENT.

17.

What do the 3R's refer to save the environment?which is one of these would be the best for environment

Answer»

Answer:

1- RECYCLE

2- Reuse

3- REDUCE

Reduce is BEST for ENVIRONMENT.

Discussion

18.	Essay on kalidas in sanskrit with hindi
Answer» ANSWER: You can FIND this answer in GOOGLE it will HELP you

18.

Essay on kalidas in sanskrit with hindi

Answer»

ANSWER:

You can FIND this answer in GOOGLE it will HELP you

Discussion

19.	Result to find the study of pollen germination on a slide in a nutrient medium?
Answer» Aim: To study pollen germination on a slide. Aim: To study pollen germination on a slide.Apparatus and materials REQUIRED: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose. Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure: Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water. Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a MATURE flower in it. Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep OBSERVING the slide regularly after intervals of half an hour. Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations: Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:In a nutrient solution or nutrient-rich medium, the pollen grains germinate. The tube/vegetative cell enlarges and comes out the pollen grains through one of the germ pores to form a pollen tube. The generative cell nucleus soon passes into it and dives to MAKE 2 sperm nuclei (male gametes). Each male gamete is lenticular to spherical in outline. Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:In a nutrient solution or nutrient-rich medium, the pollen grains germinate. The tube/vegetative cell enlarges and comes out the pollen grains through one of the germ pores to form a pollen tube. The generative cell nucleus soon passes into it and dives to make 2 sperm nuclei (male gametes). Each male gamete is lenticular to spherical in outline.Precautions: Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:In a nutrient solution or nutrient-rich medium, the pollen grains germinate. The tube/vegetative cell enlarges and comes out the pollen grains through one of the germ pores to form a pollen tube. The generative cell nucleus soon passes into it and dives to make 2 sperm nuclei (male gametes). Each male gamete is lenticular to spherical in outline.Precautions:Flowers should be freshly picked

19.

Result to find the study of pollen germination on a slide in a nutrient medium?

Answer»

Aim: To study pollen germination on a slide.

Aim: To study pollen germination on a slide.Apparatus and materials REQUIRED: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a MATURE flower in it.

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep OBSERVING the slide regularly after intervals of half an hour.

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:In a nutrient solution or nutrient-rich medium, the pollen grains germinate. The tube/vegetative cell enlarges and comes out the pollen grains through one of the germ pores to form a pollen tube. The generative cell nucleus soon passes into it and dives to MAKE 2 sperm nuclei (male gametes). Each male gamete is lenticular to spherical in outline.

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:In a nutrient solution or nutrient-rich medium, the pollen grains germinate. The tube/vegetative cell enlarges and comes out the pollen grains through one of the germ pores to form a pollen tube. The generative cell nucleus soon passes into it and dives to make 2 sperm nuclei (male gametes). Each male gamete is lenticular to spherical in outline.Precautions:

Aim: To study pollen germination on a slide.Apparatus and materials required: Fresh seasonal flower slides, microscope, beaker, cavity slide, boric acid, sucrose.Procedure:Prepare a nutrient solution by dissolving 10g sucrose and 10 mg boric acid in 100 ml water.Take a few drops of this solution on a clear slide, dust a few pollen grains from the stamen of a mature flower in it.Obverse the slide under the microscope after 5 minutes. Keep observing the slide regularly after intervals of half an hour.Observations:In a nutrient solution or nutrient-rich medium, the pollen grains germinate. The tube/vegetative cell enlarges and comes out the pollen grains through one of the germ pores to form a pollen tube. The generative cell nucleus soon passes into it and dives to make 2 sperm nuclei (male gametes). Each male gamete is lenticular to spherical in outline.Precautions:Flowers should be freshly picked

Discussion

20.	One substance Which produced in anaerobic respiration by an organism but not in aerobic respiration
Answer» ANSWER: the SUBSTANCE is LACTIC ACID

20.

One substance Which produced in anaerobic respiration by an organism but not in aerobic respiration

Answer»

ANSWER:

the SUBSTANCE is LACTIC ACID

Discussion

21.	List four conditions required for efficient gas exchange in an organism.
Answer» 1. Large surface area for easy gas exchange. 2. FINE and DELICATE surface for easy exchange of OXYGEN and carbon dioxide. 3. Mechanism for moving AIR in and out of the respiratory surface. 4. Placement of respiratory surface within the BODY for protection.

Discussion

22.	List some points how animal life is affected by deforestation
Answer» Deforestation have a NEGATIVE IMPACT on the ENVIRONMENT and animals , the most dramatic impact is loss of HABITS

22.

List some points how animal life is affected by deforestation

Answer»

Deforestation have a NEGATIVE IMPACT on the ENVIRONMENT and animals , the most dramatic impact is loss of HABITS

Discussion

23.	Nuclear region in prokaryotic cell give one word answer
Answer» Answer: nucleolous Explanation: The NUCLEAR region of prokaryoitc CELLS lies freely in CYTOPLASM as it is not bounded with any MEMBRANE

23.

Nuclear region in prokaryotic cell give one word answer

Answer»

Answer:

nucleolous

Explanation:

The NUCLEAR region of prokaryoitc CELLS lies freely in CYTOPLASM as it is not bounded with any MEMBRANE

Discussion

24.	Nuclear envelope is not found in prokaryotic cells
Answer» ANSWER:Yes Explanation:Because, in PROKARYOTIC CELLS there is no NUCLEUS

24.

Nuclear envelope is not found in prokaryotic cells

Answer»

ANSWER:Yes

Explanation:Because, in PROKARYOTIC CELLS there is no NUCLEUS

Discussion

25.	Nuclear and electrical energy are measured in
Answer» NUCLEAR : joules (J) electric : kilo watt hour (KWH) hope it helps regards please MARK me as a BRAINLIST

25.

Nuclear and electrical energy are measured in

Answer»

NUCLEAR : joules (J)

electric : kilo watt hour (KWH)

hope it helps

regards

please MARK me as a BRAINLIST

Discussion

26.	Name two structure in plants where waste products get accumulated
Answer» ANSWER: STEM, LEAVES or BARK of a TREE

26.

Name two structure in plants where waste products get accumulated

Answer»

ANSWER:

STEM, LEAVES or BARK of a TREE

Discussion

27.	It is an airborne disease in which rashes appear on the skin
Answer» The DISEASE is CHICKENPOX

Discussion

28.	Describe double circulation of blood in human beings. Why is it necessary ?
Answer» EXPLANATION: In double circulation , the blood PASSES twice through the HEART once to the BODY

28.

Describe double circulation of blood in human beings. Why is it necessary ?

Answer»

EXPLANATION:

In double circulation , the blood PASSES twice through the HEART once to the BODY

Discussion

29.	What is the percentage of dihybride parentals?
Answer» Answer: Given the principles revealed in a monohybrid cross, Mendel hypothesized that the result of two characters segregating SIMULTANEOUSLY (a dihybrid cross) would be the product of their independent occurrence. Consider two characters, seed color and seed shape. As previously shown, Y dominates y to determine seed color, and R factor for "round" dominates the r factor for "wrinkled" to determine seed shape. He then proceeded to test his hypothesis EXPERIMENTALLY. The P (Parental) cross is between true-breeding lines of wrinkled yellow peas (rrYY) and round green peas (RRyy). The F1 offspring are therefore all RrYy, and are all round and yellow. In forming the F2 plants, the alleles at the two loci segregate independently. That is, the CHANCE of GETTING an R allele and a Y allele is 1/2 x 1/2, of getting an R and a y 1/2 x 1/2, and so on. Thus, all four possible diallelic combinations occur with an equal probability of 1/4. The same is true for both parents. Given four possible gamete types in each parent, there are 4 x 4 = 16 possible F2combinations, and the probability of any particular dihybrid type is 1/4 x 1/4 = 1/16. The phenotypes and phenotypic RATIOS of these 16 genotype can be determined by inspection of the diagram above, called a Punnet Squareafter the geneticist who first used it. Alternatively, recall that the phenotypic ratioexpected for either character is 3:1, either 3 "Y" : 1 "y", or 3 "R" : 1 "R". Then, the expected phenotypic ratios of the two traits together can be calculated algebraically as a binomial distribution:

29.

What is the percentage of dihybride parentals?

Answer»

Answer:

Given the principles revealed in a monohybrid cross, Mendel hypothesized that the result of two characters segregating SIMULTANEOUSLY (a dihybrid cross) would be the product of their independent occurrence. Consider two characters, seed color and seed shape. As previously shown, Y dominates y to determine seed color, and R factor for "round" dominates the r factor for "wrinkled" to determine seed shape. He then proceeded to test his hypothesis EXPERIMENTALLY.

The P (Parental) cross is between true-breeding lines of wrinkled yellow peas (rrYY) and round green peas (RRyy). The F1 offspring are therefore all RrYy, and are all round and yellow. In forming the F2 plants, the alleles at the two loci segregate independently. That is, the CHANCE of GETTING an R allele and a Y allele is 1/2 x 1/2, of getting an R and a y 1/2 x 1/2, and so on. Thus, all four possible diallelic combinations occur with an equal probability of 1/4. The same is true for both parents. Given four possible gamete types in each parent, there are 4 x 4 = 16 possible F2combinations, and the probability of any particular dihybrid type is 1/4 x 1/4 = 1/16. The phenotypes and phenotypic RATIOS of these 16 genotype can be determined by inspection of the diagram above, called a Punnet Squareafter the geneticist who first used it.

Alternatively, recall that the phenotypic ratioexpected for either character is 3:1, either 3 "Y" : 1 "y", or 3 "R" : 1 "R". Then, the expected phenotypic ratios of the two traits together can be calculated algebraically as a binomial distribution:

Discussion

30.	Describe double circulation of blood in human beings. Why is it necessary ?
Answer» Answer: our circulatory system in which the BLOOD TRAVELS TWICE through the HEART in one complete cycle of the body is called double circulation.....

30.

Describe double circulation of blood in human beings. Why is it necessary ?

Answer»

Answer:

our circulatory system in which the BLOOD TRAVELS TWICE through the HEART in one complete cycle of the body is called double circulation.....

Discussion

31.	What is an allele????
Answer» An allele (/əˈliːl/)[1][2] is a variant form of a given gene.[3] Sometimes, the presence of different alleles of the same gene can result in different observable phenotypic traits, such as different pigmentation. A notable example of this trait of color variation is Gregor MENDEL's discovery that the white and purple FLOWER COLORS in PEA plants were the result of "pure line" traits which could be used as a control for future experiments. However, most genetic variations result in little or no observable variation. Most multicellular organisms have two sets of chromosomes; that is, they are diploid. In this case the chromosomes can be paired: each pair is made up of two chromosomes of the same type, known as homologous chromosomes. If both alleles at a gene (or locus) on the homologous chromosomes are the same, they and the organism are homozygous with respect to that gene (or locus). If the alleles are different, they and the organism are heterozygous with respect to that gene. I HOPE it will help you out please mark as brain list

31.

What is an allele????

Answer»

An allele (/əˈliːl/)[1][2] is a variant form of a given gene.[3] Sometimes, the presence of different alleles of the same gene can result in different observable phenotypic traits, such as different pigmentation. A notable example of this trait of color variation is Gregor MENDEL's discovery that the white and purple FLOWER COLORS in PEA plants were the result of "pure line" traits which could be used as a control for future experiments. However, most genetic variations result in little or no observable variation.

Most multicellular organisms have two sets of chromosomes; that is, they are diploid. In this case the chromosomes can be paired: each pair is made up of two chromosomes of the same type, known as homologous chromosomes. If both alleles at a gene (or locus) on the homologous chromosomes are the same, they and the organism are homozygous with respect to that gene (or locus). If the alleles are different, they and the organism are heterozygous with respect to that gene.

I HOPE it will help you out

please mark as brain list

Discussion

32.	Un ovuiii. Write three differences between the principal Vascular Tissues foundin plants.
Answer» ANSWER: two types of vascular tissue are found in PLANTS(1) is xylem and another is phloem Explanation: xylem- work as a conducting tissue for water (2)it provides mechanical strength to PLANT (3) it is composed of trachieds ,VESSELS,xylem fibre and xylem parenchyma phloem- transports food material (2)

32.

Un ovuiii. Write three differences between the principal Vascular Tissues foundin plants.

Answer»

ANSWER:

two types of vascular tissue are found in PLANTS(1) is xylem and another is phloem

Explanation:

xylem- work as a conducting tissue for water

(2)it provides mechanical strength to PLANT

(3) it is composed of trachieds ,VESSELS,xylem fibre and xylem parenchyma

phloem- transports food

material

(2)

Discussion

33.	One day monu told that his father is suffering from diabetes. His grandfather was also suffering from diabetes. It is hereditary disease.No, he is much worried of himself. Why is he worried
Answer» ANSWER: because his FATHER is not SUFFERING

33.

One day monu told that his father is suffering from diabetes. His grandfather was also suffering from diabetes. It is hereditary disease.No, he is much worried of himself. Why is he worried

Answer»

ANSWER:

because his FATHER is not SUFFERING

Discussion

34.	Define the following terms Protoplasm cytoplasm and nucleoplasm
Answer» Answer: Protoplasm is COMPOSED of a mixture of small molecules such as IONS, AMINO acids, monosaccharides and water, and MACROMOLECULES such as nucleic acids, proteins, lipids and polysaccharides. In eukaryotes the protoplasm surrounding the CELL nucleus is known as the cytoplasm and that inside the nucleus as the nucleoplasm.

34.

Define the following terms Protoplasm cytoplasm and nucleoplasm

Answer»

Answer:

Protoplasm is COMPOSED of a mixture of small molecules such as IONS, AMINO acids, monosaccharides and water, and MACROMOLECULES such as nucleic acids, proteins, lipids and polysaccharides. In eukaryotes the protoplasm surrounding the CELL nucleus is known as the cytoplasm and that inside the nucleus as the nucleoplasm.

Discussion

35.	Which Plant Structure are associated with transpiration
Answer» ANSWER: STOMATA and lencells are INVOLVED in TRANSPIRATION

35.

Which Plant Structure are associated with transpiration

Answer»

ANSWER:

STOMATA and lencells are INVOLVED in TRANSPIRATION

Discussion

36.	Describe biogas production in biogas plant
Answer» BIOGAS is the mixture of gases produced by the BREAKDOWN of ORGANIC matter in the ABSENCE of oxygen. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, PLANT material, sewage, green waste or food waste. Biogas is a renewable energy source.

Discussion

37.	Differentiate between :a) genotype and phenotype.
Answer» ANSWER: GENOTYPE - is a GENETIC apperance phenotype - PHYSICAL apperance Explanation:

37.

Differentiate between :a) genotype and phenotype.

Answer»

ANSWER:

GENOTYPE - is a GENETIC apperance

phenotype - PHYSICAL apperance

Explanation:

Discussion

38.	In whittaker's classification prokaryotes are placed in the kingdom
Answer» ANSWER: In KINGDOM MONERA. .EXPLANATION:

38.

In whittaker's classification prokaryotes are placed in the kingdom

Answer»

ANSWER:

In KINGDOM MONERA.

.EXPLANATION:

Discussion

39.	In which year whittaker proposed the five kingdom classification?
Answer» Answer: 1969 Explanation:

39.

In which year whittaker proposed the five kingdom classification?

Answer»

Answer:

1969

Explanation:

Discussion

40.	Name only one vestigial organ in human digestive system
Answer» $\mathcal\purple{Hello}$ $\mathfrak\pink{Answer}$ $\mathscr\blue{The\: Appendix}$ HOPE IT HELPS U❤️ BTW, there are 10 vestigial ORGANS in humans

Discussion

41.	Name one source and deficiency disease of vitamin c
Answer» ANSWER: SOURCES are ORANGE and papaya and deficiency is scurvey

41.

Name one source and deficiency disease of vitamin c

Answer»

ANSWER:

SOURCES are ORANGE and papaya and deficiency is scurvey

Discussion

42.	Different group of Bees
Answer» ANSWER:ITALIAN BEE German bee Carniolan bee Caucasian bee Buckfast bee Russian bee Touch BRILLIANT EXPLANATION:

42.

Different group of Bees

Answer»

ANSWER:ITALIAN BEE

German bee

Carniolan bee

Caucasian bee

Buckfast bee

Russian bee

Touch BRILLIANT

EXPLANATION:

Discussion

43.	Describe the origin and course of tract of gall.
Answer» ANSWER: The gracile fasciculus (fasciculus gracilis, tract of Goll or gracile tract) is a NERVE tract (a bundle of nerve fibers) in the dorsal column-medial lemniscus pathway of the spinal cord and carries information from the lower parts of the body. The gracile fasiculus is one of many ascending tracts which carry received sensory information to the brain via the spinal cord. It is also one of the dorsal columns, the other being the CUNEATE fasciculus.[1][2] Gracile fasciculus Spinal cord tracts - English.svg Gracile fasciculus is labeled in blue at UPPER right. Gray672.png Diagram of the principal fasciculi of the spinal cord. Details Identifiers Latin Fasciculus gracilis medullae spinalis NeuroLex ID birnlex_1282 TA A14.1.02.243 A14.1.04.018 A14.1.04.107 FMA 73938 Anatomical terms of NEUROANATOMY [edit on Wikidata

43.

Describe the origin and course of tract of gall.

Answer»

ANSWER:

The gracile fasciculus (fasciculus gracilis, tract of Goll or gracile tract) is a NERVE tract (a bundle of nerve fibers) in the dorsal column-medial lemniscus pathway of the spinal cord and carries information from the lower parts of the body. The gracile fasiculus is one of many ascending tracts which carry received sensory information to the brain via the spinal cord. It is also one of the dorsal columns, the other being the CUNEATE fasciculus.[1][2]

Gracile fasciculus

Spinal cord tracts - English.svg

Gracile fasciculus is labeled in blue at UPPER right.

Gray672.png

Diagram of the principal fasciculi of the spinal cord.

Details

Identifiers

Latin

Fasciculus gracilis medullae spinalis

NeuroLex ID

birnlex_1282

TA

A14.1.02.243

A14.1.04.018

A14.1.04.107

FMA

73938

Anatomical terms of NEUROANATOMY

[edit on Wikidata

Discussion

44.	1. Differentiate between :(a) genotype and phenotype.(b) character and trait.(c) monohybrid and dihybrid cross
Answer» ANSWER: (a) phenotype is helps to represent the outlook of the plant ex tall SHORT. GENOTYPE is helps to represent it genetically ex to TT TT

44.

1. Differentiate between :(a) genotype and phenotype.(b) character and trait.(c) monohybrid and dihybrid cross

Answer»

ANSWER:

(a) phenotype is helps to represent the outlook of the plant ex tall SHORT.

GENOTYPE is helps to represent it genetically ex to TT TT

Discussion

45.	In meiosis crossing over is initiated by.... 1.Pachytene 2.Leptotene 3. Zygotene, 4.Diplotene
Answer» ANSWER: Pachytene Explanation:

45.

In meiosis crossing over is initiated by.... 1.Pachytene 2.Leptotene 3. Zygotene, 4.Diplotene

Answer»

ANSWER:

Pachytene

Explanation:

Discussion

46.	Explain the process of formation of complex proteins
Answer» Answer: A protein COMPLEX or multiprotein complex — A group of two or more associated polypeptide chains. PROTEINS in a protein complex are linked by non - covalent protein - protein interactions. The PROCESS of complex formation comprises of steps namely : ... During this PHASE the proteins REMAIN largely Solvated

46.

Explain the process of formation of complex proteins

Answer»

Answer:

A protein COMPLEX or multiprotein complex — A group of two or more associated polypeptide chains. PROTEINS in a protein complex are linked by non - covalent protein - protein interactions. The PROCESS of complex formation comprises of steps namely : ... During this PHASE the proteins REMAIN largely Solvated

Discussion

47.	How are the heredity changes responsible for evolution
Answer» ${ \huge { \boxed {\green {hello \: mate }}}}$ EVOLUTION is the changes in inherited traits of a POPULATION from generation to generation. mutation in these genes can produce NEW and ALTERED traits ,resulting in hereditary changes in organisms. Heredity is the process of passing of traits from one generation to the NEXT generation. $\blue {please \: mark \: brainleast}$

47.

How are the heredity changes responsible for evolution

Answer»

${ \huge { \boxed {\green {hello \: mate }}}}$

EVOLUTION is the changes in inherited traits of a POPULATION from generation to generation. mutation in these genes can produce NEW and ALTERED traits ,resulting in hereditary changes in organisms. Heredity is the process of passing of traits from one generation to the NEXT generation.

$\blue {please \: mark \: brainleast}$

Discussion

48.	Describe biogas production in biogas plant.
Answer» $\huge \orange {\|hello \: buddy\|}$ Biogas is the mixture of gases produced by the BREAKDOWN of ORGANIC matter in the absence of oxygen. Biogas can be produced from RAW materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or FOOD waste. Biogas is a RENEWABLE energy source. $\red {please \: mark \: brainleast}$

48.

Describe biogas production in biogas plant.

Answer»

$\huge \orange {|hello \: buddy|}$

Biogas is the mixture of gases produced by the BREAKDOWN of ORGANIC matter in the absence of oxygen. Biogas can be produced from RAW materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or FOOD waste. Biogas is a RENEWABLE energy source.

$\red {please \: mark \: brainleast}$

Discussion

49.	What should be the ideal blood pressure for a normal adult man
Answer» ANSWER: below 120 and over 80....

49.

What should be the ideal blood pressure for a normal adult man

Answer»

ANSWER:

below 120 and over 80....

Discussion

50.	Observe the root nodules of a leguminous plant such as bean and pea
Answer» Answer: Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria.[1] Under nitrogen-limiting CONDITIONS, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.[2] This process has evolved multiple times within the legumes, as well as in other species found within the Rosid clade.[3] Legume crops include beans, peas, and soybeans. Within legume root nodules, nitrogen gas (N2) from the atmosphere is converted into ammonia (NH3), which is then assimilated into amino acids (the building blocks of PROTEINS), nucleotides (the building blocks of DNA and RNA as well as the important energy molecule ATP), and other cellular constituents such as vitamins, flavones, and hormones. Their ability to fix gaseous nitrogen makes legumes an ideal agricultural ORGANISM as their requirement for nitrogen fertilizer is reduced. Indeed, high nitrogen content blocks nodule development as there is no benefit for the plant of FORMING the symbiosis. The energy for splitting the nitrogen gas in the nodule comes from sugar that is translocated from the leaf (a product of photosynthesis). Malate as a breakdown product of sucrose is the direct carbon source for the bacteroid. Nitrogen fixation in the nodule is very oxygen sensitive. Legume nodules harbor an iron containing protein called leghaemoglobin, closely related to animal myoglobin, to facilitate the diffusion of oxygen gas used in respiration.

50.

Observe the root nodules of a leguminous plant such as bean and pea

Answer»

Answer:

Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria.[1] Under nitrogen-limiting CONDITIONS, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.[2] This process has evolved multiple times within the legumes, as well as in other species found within the Rosid clade.[3] Legume crops include beans, peas, and soybeans.

Within legume root nodules, nitrogen gas (N2) from the atmosphere is converted into ammonia (NH3), which is then assimilated into amino acids (the building blocks of PROTEINS), nucleotides (the building blocks of DNA and RNA as well as the important energy molecule ATP), and other cellular constituents such as vitamins, flavones, and hormones. Their ability to fix gaseous nitrogen makes legumes an ideal agricultural ORGANISM as their requirement for nitrogen fertilizer is reduced. Indeed, high nitrogen content blocks nodule development as there is no benefit for the plant of FORMING the symbiosis. The energy for splitting the nitrogen gas in the nodule comes from sugar that is translocated from the leaf (a product of photosynthesis). Malate as a breakdown product of sucrose is the direct carbon source for the bacteroid. Nitrogen fixation in the nodule is very oxygen sensitive. Legume nodules harbor an iron containing protein called leghaemoglobin, closely related to animal myoglobin, to facilitate the diffusion of oxygen gas used in respiration.

Discussion

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