50295 + Interview Questions in Secondary School in Biology

1.	a farmer observe some pea plants in his garden some are tall and have round.some are balled and wrinkle seeds but he wants all pea plants to be tall and have round seeds if not all atleast 90./. of plants can he get all desirable characters or not?
Answer» if we take the parents as , TTRR ttrr Gamets are TR TR tr tr F1 -----> TR TR tr TtRr TtRr tr TtRr TtRr SO the phenotype wud be "ALL TALL AND ROUND"----------> 100% RESULT For the F2 progeny , gamets are : TR Tr tR tr F2-----> TR Tr tR tr TR TTRR TTRr TtRR TtRr Tr TTRr TTrr TtRR Ttrr tR TtRR TtRr ttRR ttRr tr TtRr Ttrr ttRr ttrr So, the phenotype : 9:3:3:1 9---Tall and Round 3---Tall and wrinkled 3---balled and Round 1---balled and wrinkled Here the % of Tall and Round WOULD be $\frac{9}{16} X100= 56.25%$ So, he won't get 90% results if he GOES for F2 progeny.

Discussion

2.	Write some slogans on to conserve water and to conserve forests
Answer» CONSERVE the WATER,SAVE the planet. plant your part,be water smart slow the FLOW save for tomorrow water is life cherish every drop ! save water save life planning today, GREENING tommorow every part of the world is green if every heartof the human is green don't let our future dry up save forest

Discussion

3.	1.Information abt CUTANEOUS RESPIRATION in frog.
Answer» Cutaneous respiration of frog is the mechanism through which amphibians breath.instead of using gills they USE the skin to breath.their skin must always be MOIST to allow efficient respiration.they absorb oxygen from the water through their skin using special blood vessel. while completely submerged all of the frog respiration takes place through the skin. the skin is composed of thin membranous tissue that is quite permeable to water and contains a large NETWORK of blood vessels the thin membranous skin allows the respiratory GASSES to readily diffuses directly down their gradient between the blood vessels the blood vessels and the surroundings. when the frog is out of the water mucus gland in the skin keep the frog moist which HELPS absorbs dissolved oxygen from the air.

Discussion

4.	Prevention for whooping cough
Answer» Wooping COUGH is a bacterial disease. - It can be treated with ANTI - bacterial MEDICINES. - Consult a doctor.

Discussion

5.	What is biology explain
Answer» Biology is a BRANCH of science that DEALS with the study of living organisms , their basic unit and everything about living THINGS..

Discussion

6.	What are the pros and cons of genetic enginnering ? Give answer in detail.
Answer» *GENETIC Engineering:* Genetic Engineering is the modification of genetic information of living organisms by manipulation of DNA by adding,removing or repairing part of genetic material and changing the phenotype of the organism. *Benefits:* UNDERSTANDING the GENE structure and function through BASIC researches. Genetic Engineering is also employed in the transfer of genes involved in nitrogen fixation. This will help the cultivators to increase productivity. Recent advances made in Genetics,molecular biology and bio chemistry have resulted in the origin of new branch of science.

Discussion

7.	Dental formulas in biology
Answer» Dental FORMULA for human adult is 2123/2123 in this formula FIRST digit represent I(incisors) ,NEXT to that represent C(canines) ,and THIRD pm (premolars) , fourth m(molars ).

Discussion

8.	Why during spear fishing hunter aims the tail of fish rather then head of fish?
Answer» During spear fishing hunter AIMS the TAIL of fish RATHER then head of fish because he is fooled by the refraction of LIGHT due to which he can see the fish. We actually see the real fish as the apparent fish and to AVOID this confusion the hunter aims at the tail.

Discussion

9.	Why pyramids are used to show food chain of of biomass
Answer» a pyramid of BIOMASS is a better diagram to use.A pyramid of biomass shows the total mass of organisms at each STAGE of a food chain. In GENERAL, all producers have a higher biomass than the primary consumer, so a pyramid will always be produced. The total energy (and biomass) present at a lower tier of the pyramid, MUST be greater than the higher tiers in order to SUPPORT the energy requirements of the subsequent organisms.

Discussion

10.	Plasma devoid of fibrinogen.
Answer» *PLASMA DEVOID of FIBRINOGEN is callled SERUM.*

Discussion

11.	Cell was discovered by ?
Answer» CELL was DISCOVERED by ROBERT HOOKE.

Discussion

12.	Differentiate b/w symptoms and signs of a disease...
Answer» Symptoms does not provide information about what the DISEASE is.but SIGNS provide a LITTLE more information about the disease.symptoms INDICATE the presence of disease.For example having headache does not mean that we have a brain tumour therefore it is a SYMPTOM

Discussion

13.	What do u mean by osmosess and transpiration
Answer» Osmosis is the movement of water from a REGION of lower solute CONCENTRATION to that of higher solute concentration across a semipermeable membrane(SPM). OR in simple WORDS it is diffusion of water through a SPM.And this diffusion of water molecules continues to occur across the membrane until an equilibrium is reached .At equilibrium the water potential on both the sides of membrane is equal.The potential energy of water is known as water potential. Transpiration is the LOSS of water vapour through the suface of the leaf .

Discussion

14.	What is the role of earthworms in soil fertility
Answer» Earthworm perform LEACHING process in the SOIL..THATS why they are also KNOWN as Best FRIENDS of farmers ..

Discussion

15.	What is molecular phlogeny
Answer» Molecular phylogenetics is the branch ofphylogeny that analyses hereditary molecular differences, mainly in DNA SEQUENCES, to GAIN information on an organism's evolutionary relationships. The result of a molecular phylogenetic ANALYSIS is EXPRESSED in a phylogenetic tree. plz mark as the BEST

Discussion

16.	Why is AIDS called a syndrome and not a disease ? Please explain in detail. I need the answer urgently as I have my science exam tomorrow . Kindly cooperate
Answer» AIDS called as syndrome and not a disease because AIDS ( HIV virus ) effect only the immune system of the body then blood which CONTAINS WBCs are not able to fight any type of disease as a result our body parts are not stable . therefore AIDS ( ACQUIRED Immune DEFICIENCY syndrome ) at that time a SMALL type of pathogenic microorganisms which are always presents are attacks on that body . since AIDS is a syndrome which is group of symptoms that are characteristic of a disorder and other side disease are defined as disorder of a SPECIFIC organ or any body system get infected thats why we can say that AIDS is a syndrome not a disease .

Discussion

17.	Where the food is situated in plants and in which form?
Answer» The food is STORED in the roots,stems,seeds and fruits of PLANTS in the FORM of STARCH

Discussion

18.	1. Mg and AL belongs to 3rd period in a modern periodic table . why this is so . Give reason ?2. mention any two advantages of using vegetative prapogation
Answer» 1. Mg and Al belongs to 3rd period in a MODERN periodic table ... because group three element has atleast one stable Isotopes occurs naturally. 2.Two advantages of using VEGETATIVE propagation. i ) - Seedless PLANTS can be GROWN by this way .. which lost it's ability to reproduce it's seed. *ii ) - Easy and convinient METHOD for farming.*

Discussion

19.	All living organisms are identified and categorized on the basis of their body design in form and function. What is meant by this line??? What is meant by body design in form and function???PLZ HELP............ URGENT.............
Answer» LIVING organisms have bodies with some identified organs (a unit that performs some useful function). The organisms have their own shapes and structures. Many organisms have similar kinds of organs and shapes. Those organs belonging to one category have same shape, same function, composed of same cells and behave in similar way. The structure (interconnections of the ORGAN with other organs) and role of that organ in the body are similar to other organisms in the species. Basically, organ SYSTEMS are similar in one species. Body design means the VARIOUS PARTS in the body, the way they are interconnected, and their physical shapes.

Discussion

20.	What is the function of ecdysone in a frog during metamorphosis?
Answer» About once a month during active season frog CASTS off the outermost LAYER of its skin as thin sheets or small shreds.This process is called as moulting or Ecdysis.The skin casting may be eaten up by frog and in this process ECDYSONE hormone helps.. hope it helped you!!!

Discussion

21.	plants absorb water from their roots,,,,,,,,,,,,but how water goes from roots to plant if a gravitational force is acting on it?????????????????????
Answer» *It is going through diffusion. in short trees it is TAKES PLACE with the help of root PRESSURE and in tall trees it is OCCUR with the help of transpiration PULL*

Discussion

22.	What are the uses of physical activities ?
Answer» 1. PHYSICAL ACTIVITIES MANAGE OUR BODY WEIGHT 2. IT MAKES BODY FIT AND MAKE OUR HEALTH FINE. 3. DUE TO REGULAR EXERCISE WE REDUCE THE RISK OF DISEASE. 4. IT MAINTAINS THE BLOOD PRESSURE IN BODY. 5. DAILY PHYSICAL ACTIVITY PREVENTS FROM HEART ATTACK.

Discussion

23.	____________________ first used the binomial system of nomenclature .
Answer» *Carlolus Linnaeus FIRST used the BINOMIAL SYSTEM of NOMENCLATURE .*

Discussion

24.	why is greenhouse built? explain their functions. is greenhouse effect related to man-made greenhouse gases? support your answer with suitable reason.
Answer» A greenhouse is built to grow tropical plants in temperate and MOUNTAINOUS regions. It traps all the sunlight it recieves and keeps the temperature high. For EXAMPLE. In the greenhouse the temp would be 35-40 C while outside it might be some15-20c. YES it related as greenhouse gases keep increasing the temperature of earth and greenhouse EFFECT will keep increasing. I don't actually know the proper reason

Discussion

25.	Which organism differentiate primitive and advanced
Answer» Primitive organisms are unicellular and the body functions and WORK LOAD of the entire is cell is performed by same cell.they are SMALL in size advanced organisms have many organs and tissues and they share work load among themselves.The death of cell doesn't CAUSE death of organisms and they are mostly large in size

Discussion

26.	Connect lifespan with diversity
Answer» Life span is the period of life from BIRTH uptill natural DEATH . Life span of diffrent species is diffrent and it does not depend on the size of organism.For example .....Lifespan of PARROT is about 140years where as of crow it is only 15 years

Discussion

27.	Can u explain me what convection current are??
Answer» Convectional CURRENTS refers to a form of low to high speed winds on earth and also one of the many forms of convection on earth .They form due to an increase in temperature in an enclosed space in which a fluid is located.As WARMER fluid moves to the top the COOLER fluid moves to the bottom.This is the term meaning in geography.Here's how the thing actually works.The energy reaches at the top of the convection cell and it RELEASES as much of energy as it can and then sinks to the bottom.At this point itself it gets hot again and the whole convection current STARTS again.

Discussion

28.	What is the category of bacteria that will release free nitrogenous compounds in the soil ???pls answer fast
Answer» Such bacteria belong to the group denitrifying bacteria that TURN NITRATES or nitrites to NITROGEN containing GASES .They FORM an important part of the nitrogen cylcle and their main purpose is to metabolise the nitrogenous compounds with the assistance of nitrate reductase enzyme to turn oxides back to nitrous oxides or nitrogen gas for energy generation.

Discussion

29.	Mention the difference between nitrification and denitrification.
Answer» NITRIFICATION is the process of conversion of ammonia, firstly into nitrates an into nitrites by the action of NITRIFYING BACTERIA such as nitrobacter Denitrification is conversion of nitrates and nitrites of the soil into FREE nitrogen.

29.

Mention the difference between nitrification and denitrification.

Answer»

NITRIFICATION is the process of conversion of ammonia, firstly into nitrates an into nitrites by the action of NITRIFYING BACTERIA such as nitrobacter

Denitrification is conversion of nitrates and nitrites of the soil into FREE nitrogen.

Discussion

30.	Abbreviation of DNA & explain DNAFingerprinting?
Answer» DNA represents the blueprint of the human genetic makeup. It exists in virtually EVERY CELL of the human BODY and differs in its sequence of nucleotides . The human genome is made up of 3 BILLION nucleotides, which are 99.9% identical from one person to the next. The 0.1% variation, therefore, can be used to distinguish one individual from another. It is this difference that can be used by forensic scientists to match specimens of blood , TISSUE, or hair follicles to an individual with a high level of certainty.

Discussion

31.	Who discovered golgi apparatus ?
Answer» *GOLGI APPARATUS DISCOVERED by CAMILLO golgi .*

Discussion

32.	______________________called as amphibians of plant kingdom .
Answer» *BRYOPHYTES* are called so because they live in DAMP and SHADY PLACES..

Discussion

33.	Write about protochordata . easy to understand plz .
Answer» *- TRIPLOBLASTIC* *- marine* *- bilateral symmetry* *- HERMAPHRODITE .* *- ROD LIKE STRUCTURE*

Discussion

34.	Who given the term platyhelminthes ?
Answer» *this PHYLUM is GIVEN by Gegenbaur in 1859 .*

Discussion

35.	Our teeth & elephants tusk are analogous organs or homologous organs?give reasons
Answer» *our TEETH and elephants tusk are HOMOLOGOUS ORGANS because both are made with inscissors only but their function is DIFFERENT*

Discussion

36.	Define evolution and biodiversity .
Answer» biodiversity -it means different forms of living organisms found in the particular REGIONS . it is varied and diverse form of living organisms which differs from each other on the BASIS of external features, physical appearance , shape , size , structure , HABITAT , behavior , etc. evolution - it proposed by charles darwin in 1859 most life forms that are exist TODAY have arisen by an accumulation of CHANGES in their body structure . the organisms acquired all these changes to survive better ( survival of fittest one in our changing environment .

Discussion

37.	Name the book in which darwin described the idea of evolution .
Answer» *ORIGIN Of SPECIES is the BOOK*

Discussion

38.	What came first on the earth hen or egg????urgent 8 point for it!!!!!
Answer» *hen is FIRST because the SCIENTISTS believe that the egg CONTAINS a protien which is in hen so the hen is first*

Discussion

39.	Write about phylum with its features . minimum 4 .
Answer» *porifera :-* *- sedentary* *- sessile* *- appendages are absent* *- CELLULAR level of organisation* *- exo- skeleton* *- radial symmetry* *- non-motile* *- reproduction is ASEXUAL by budding .* *e.g.sycon , eupletilia* *platyhelminthe :-* *- 'platy' means flat and 'minthes' worm* *- organisms of this phylum are dorsiventral* *- parasitic* *- bilateral symmetry* *- triploblastic* *- reproduction sexual and also asexual* *- organ level of organisation .* *- skeleton is absent* *e.g.planaria , tapeworm , etc.* *nematoda :-* *- bilateral symmetry* *- false COELOM* *- triploblastic* *- nervous system well developed* *- reproduction is sexual* *- they are free living means they are live in water as well as moist soil* *annelida :-* *- bilateral symmetry* *- triploblastic* *- reproduction is sexual* *- organ level of organisation* *- segments are visible .* *- they are free living* *- they attached themselves to the body of animals and food by sucking* *e.g.leech ,nereis ,etc.* *echinodermata :-* *- found in BOTTOM of the sea* *- triploblastic* *- coelomic CAVITY* *- reproduction is sexual* *- radial symmetry* *e.g.starfish , feather fish , etc.*

Discussion

40.	Who classified living organism into two kingdoms ?
Answer» *Carolus LINNAEUS CLASSIFIED the LIVING organisms into two KINGDOMS in 1758.*

Discussion

41.	Prevention for genetic autoimmune disease
Answer» Autoimmune diseases are diseases that are caused by the body’s immune CELLS mistaking the normal cells of the body as foreign OBJECTS and therefore attacking them. GENETIC diseases are those that occur because of defective genes, specific pieces of DNA that code for a specific trait, that are passed from parent to child. Because autoimmune diseases involve the immune SYSTEM, they are complex diseases that require just the RIGHT combination of defective genes along with environmental triggers for the disease to occur.

Discussion

42.	What are the distinctions indicated in the words mutualism,commensalism, and parasitism
Answer» PLEASE SEE the ATTACHMENT

Discussion

43.	A Small heavenly body by luminous by friction on entering the atmosphere of the earth .
Answer» *METEORS are the heavenly body which GET LUMINOUS by friction during entering the earth's ATMOSPHERE .*

Discussion

44.	A speech on science and future ........
Answer» Science, it was not known to people till the 10th Century. Thepeople used to look at everything as an act of God. But Science has given thereal answer to each and everyone and nowadays no one even thinks to KNOW aboutanything without the auspicious touch of science. Science is now even a poorman's work, for EXAMPLE, a motor used to distribute water evenly to eachfarmer's fields, similarly the fertilizers which are harmful but still used.Earlier farmers used to put manure to their crops but now they put onfertilizers which are very harmful. Now, by this 21st Century, everything wesee around us is an INVENTION of science. Science has even played a major rolein shaping the lives of all. Due to science we are able to live lavishly andhave a lot of entertainment. It is due to science that we EXIST on this Earth.Science is the basic need of our daily life. Nowadays it seems that science hasbestowed a lot on us but we keep on forgetting that the nature has INSTILLED alot of facilities. We neglect them and keep on our way with science. So I conclude withthe thought that in the future generation there will be everything that willdepend on science. We would be so dependable on them that they would almost beinto their trap and without anyone of us noticing that.

Discussion

45.	Why does America target Asian developing countries for the pollution though it has much more number of industries?
Answer» it is not that America is targetting on Asian developing COUNTRIES for pollution directly. Though there are many Industries in America, it is a total continent. But when we take certain developing regions, they are countries. As already developed country, America can SPEND lot of MONEY on pollution control. This COST will be included in the production cost. Where as in developing countries, we cannot afford to place costs on pollution control under production cost. ANYWAY we are all, I mean almost 193 countries are the members of UN organisation which takes care of pollution control on world-wide aspect

Discussion

46.	What are plant tissues
Answer» *Plant tissues are GROUPS of cells which are joined to FORM a SIMILAR function. Two examples of plant tissues are Meristematic TISSUE and Permanent tissue.*

Discussion

47.	Draw a well labeled diagram of a plant cell and label the parts of nucleus, protoplasm, vacuole, cell wall and cell membrane.
Answer» PLEASE SEE the ATTACHMENT

Discussion

48.	Making anti-viral drugs is more difficult than making anti-bacterial medicines. Why?
Answer» This is because ANTI bacterial medicine block the formation of cell wall of BACTERIA. When bacteria don't have cell wall they don't DIVIDE hence they die. While viruses don't have their machinery of own, when they enter into our body they use our cells as machinery. So to kill virus we have to kill our cells as well. Hence making anti viral DRUGS is more difficult than making anti bacterial DRUG.

Discussion

49.	Explain the traditional methods such as Chain Pump,Moat,Ra hat,Dhekli.
Answer» Chain pump: A chain pump consists of two large wheels, connected by an endless chain. The bottom wheel is half immersed in the WATER SOURCE. As the wheel is turned, the connected buckets dip into the pool and pick up water. The chain then lifts them to the upper wheel, where the water from the buckets is transferred to the pool. The chain then carries the empty buckets back down to be refilled and the PROCESS continues. Moat or pulley-system: It is a manual irrigation method. By this method water is directly taken out of wells with the help of pulley and is used to irrigate fields. Rahat: In this method water is drawn out of wells by animals. Animals like cow, buffalo, oxen etc. are connected to wheel. Animals move and rotate the wheel lead to draw the water from the WELL. Dhekli: In this system a ROPE and bucket connected to pole to obtain water from well. They connect rope and bucket on one end of a heavy stick and a heavy counter weight at the other end.

Discussion

50.	Which is a better mode of reproduction sexual or asexual? Why?
Answer» Sexual REPRODUCTION is BETTER than Asexual reproduction because of GENETIC VARIATION in sexual reproduction.As there is a variation between the parent and the offspring.Whereas in asexual the offsprings are a copy of their PARENTS

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

a farmer observe some pea plants in his garden some are tall and have round.some are balled and wrinkle seeds but he wants all pea plants to be tall and have round seeds if not all atleast 90./. of plants can he get all desirable characters or not?

Write some slogans on to conserve water and to conserve forests

1.Information abt CUTANEOUS RESPIRATION in frog.

Prevention for whooping cough

What is biology explain

What are the pros and cons of genetic enginnering ? Give answer in detail.

Dental formulas in biology

Why during spear fishing hunter aims the tail of fish rather then head of fish?

Why pyramids are used to show food chain of of biomass

Plasma devoid of fibrinogen.

Cell was discovered by ?

Differentiate b/w symptoms and signs of a disease...

What do u mean by osmosess and transpiration

What is the role of earthworms in soil fertility

What is molecular phlogeny

Why is AIDS called a syndrome and not a disease ? Please explain in detail. I need the answer urgently as I have my science exam tomorrow . Kindly cooperate

Where the food is situated in plants and in which form?

1. Mg and AL belongs to 3rd period in a modern periodic table . why this is so . Give reason ?2. mention any two advantages of using vegetative prapogation

All living organisms are identified and categorized on the basis of their body design in form and function. What is meant by this line??? What is meant by body design in form and function???PLZ HELP............ URGENT.............

What is the function of ecdysone in a frog during metamorphosis?

plants absorb water from their roots,,,,,,,,,,,,but how water goes from roots to plant if a gravitational force is acting on it?????????????????????

What are the uses of physical activities ?

____________________ first used the binomial system of nomenclature .

why is greenhouse built? explain their functions. is greenhouse effect related to man-made greenhouse gases? support your answer with suitable reason.

Which organism differentiate primitive and advanced

Connect lifespan with diversity

Can u explain me what convection current are??

What is the category of bacteria that will release free nitrogenous compounds in the soil ???pls answer fast

Mention the difference between nitrification and denitrification.

Abbreviation of DNA & explain DNAFingerprinting?

Who discovered golgi apparatus ?

______________________called as amphibians of plant kingdom .

Write about protochordata . easy to understand plz .

Who given the term platyhelminthes ?

Our teeth & elephants tusk are analogous organs or homologous organs?give reasons

Define evolution and biodiversity .

Name the book in which darwin described the idea of evolution .

What came first on the earth hen or egg????urgent 8 point for it!!!!!

Write about phylum with its features . minimum 4 .

Who classified living organism into two kingdoms ?

Prevention for genetic autoimmune disease

What are the distinctions indicated in the words mutualism,commensalism, and parasitism

A Small heavenly body by luminous by friction on entering the atmosphere of the earth .

A speech on science and future ........

Why does America target Asian developing countries for the pollution though it has much more number of industries?

What are plant tissues

Draw a well labeled diagram of a plant cell and label the parts of nucleus, protoplasm, vacuole, cell wall and cell membrane.

Making anti-viral drugs is more difficult than making anti-bacterial medicines. Why?

Explain the traditional methods such as Chain Pump,Moat,Ra hat,Dhekli.

Which is a better mode of reproduction sexual or asexual? Why?