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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 9001. |
Justify the following statements on the basis of external features. 1. Underground parts of plants are not always roots 2. Flower is a modified shoot |
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Answer» 1. Underground stem get modified for different purposes like food storage, reproduction and perennation. They can be recognized from root in having nodes, internodes, scale leaves, terminal bud &axillary bud eg. Rhizome – ginger, stem tuber- potato. 2. A flower can be considered as a modified shoot because each whorl of a flower represents each node. The leaves at each node is modified to perform functions like protection, attraction and reproduction. The internodes are compressed to form a flower. |
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| 9002. |
Wavelength of an oxgyen molecule, `O_(2)`, travelling at `500 m//sec` is :A. `0.026 Å`B. `2.6 Å`C. `0.26 Å`D. `26 Å` |
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Answer» Correct Answer - C `lambda = (h)/(mv)` `O_(2)` molecule `m = 32` amu `= 32 xx 1.6 xx 10^(-27) kg` `lambda = (6.626 xx 10^(-34))/(32 xx 1.6 xx 10^(-27) xx 500) = 0.26 Å` |
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| 9003. |
Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of O2, root growth is restricted or completely stopped. How do the plants growing in marshlands or swamps obtain their O2 required for root respiration? |
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Answer» In marshy area, the plants get O2 through special roots called pneumatophores or respiratory roots. Such roots are negatively geotropic. |
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| 9004. |
What are the negative effect regarding bio degradable plastics? I. The bio-degradable plastics will add to the already piling up municipal garbage II. bio-degradable plastics are expensive and the technology for manufacture is not easily available (a) only I (b) only II (c) Both I & II (d) only III |
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Answer» (c) The bio-degradable plastics will add to the already piling up municipal garbage. The immediate benefits of recovery and recycle of normal plastics is also lost if bio-degradable plastics are introduced. As of now, compared to normal plastic, the biodegradable plastics are expensive and the technology for manufacture is not easily available. It may be possible to treat bio-degradable plastics in countries where solid waste management systems are working satisfactorily and extensively. |
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| 9005. |
What is the main health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone? I. Increased skin cancer II. Damage to eyes III. Increased liver cancer IV. Reduced immune system (a) I & II (b) III (c) II & III (d) All the above |
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Answer» The Right option is:(b) III |
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| 9006. |
Name the plant that shows unusual flowering phenomenon in hilly tracks of Karnataka, Kerala and Tamilnad. |
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Answer» Strobilanthus kuluthiana ( Neelakuranji) |
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| 9007. |
Statement : Many people living in the slums of western part of the town are diagnosed to be suffering from malaria. Course of action : I. The municipal corporation should immediately make necessary arrangements to spray mosquito repellent in the affected area. II. The municipal authorithy should immediately make necessary arrangements to provide quick medical help to the affected people. III. The municipal authority should take steps to shift all the people staying in the slums of western part of the town to other areas.A. Only I followsB. Only I and II followC. Only I and III followD. Only II and III follow |
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Answer» Correct Answer - D All three course of action can be followed to overcome malaria problem. |
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| 9008. |
Statement : The prices of essential commodities have gone up substantially during the past few weeks. Courses of action : I. The government should sep up an expert committee to study the trend of prices. II. The government should immediately abolish taxes on essential commodities. III. The government should advise the general public to refrain from purchasing essential commodities for few days.A. Only I followsB. Only I and II followC. Only I and III followD. Only I and II follow |
| Answer» I and II Course of action should be followed because course of action III opposes the need for essential commodities | |
| 9009. |
Statement : The school dropouts rate in many districts in the state has increased sharply during the last few years as the parents of these children make them work in the fields owned by others to earn enough for them to get at least one meal a day. Courses of action : (A) The government should put up a mechanism to provide food grains to the poor people in these districts though public distribution system to encourage the parents to send their wards to school. (B) The government should close down some of these schools in the districts and deploy the teachers of these schools to nearby schools and ask remaining students to join these schools. (C) Government should issue arrest warrent for all the parents who force their children to work in field instead of attending classes.A. only (A)B. only(B)C. only (C)D. only (A) and (B) |
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Answer» Correct Answer - A Course of action (A) is only feasible solution because the government can neither close these schools nor issue arrest warrants for all the parents. |
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| 9010. |
Statements : Many school buses fitted CNG kit without observing the safety guidelines properly. This results into some instances of these buses catching fire due to short circuit and endangering the lives of the school children. Course of action I. The regional transport authority should immediately carry out checks of all the school buses fitted with CNG kit. II. The management of all the schools should stop hiring buses fitted with CNG kit. III. The government should issue a notification banning school buses for use of CNG kit.A. Only I followsB. Only II followsC. Only III followsD. I and II follow |
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Answer» Correct Answer - A Explanation : As safety guidelines are not observed by many school buses, so regional transport authority should carry out checks of all the buses fitted with CNG kit. So, course of action I follows, CNG is a pollution free fuel and its course are more than petrol and diesel So, it should be encouraged but with safety norms. So, course of action II and III do not follow. |
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| 9011. |
Read the following passage and answer the questions that follow:Cholesterol is a waxy substance that is present in our body. It’s an important component of our cell walls and other tissues, but it is thought to be harmful if in excess. It can lead to blockages caused by plaque formation in the heart’s arteries causing heart disease and heart attacks. Such blockages can also happen in arteries, in the legs or in the brain. Cholesterol is produced in the liver, and the amount produced is influenced by our genes.The food we consume, too, has an effect on cholesterol levels. Fatty foods, especially those high in saturated fats, and foods high in simple sugars such as cold drinks increase cholesterol levels. Lack of physical activity and exercise also leads to elevated levels. We can reduce cholesterol levels by following a heart-healthy lifestyle, which includes regular physical activity for at least 30 minutes daily and a diet high in fruits and vegetables and low in saturated sugar.Statins are a group of drugs most recommended for those with high cholesterol. Red yeast rice has been shown to be effective in lowering cholesterol. Include garlic and flaxseed in your daily diet. Olive oil, Canola oil or other oils rich in monounsaturated fatty acids can be used for cooking in order to reduce cholesterol through food. The ill effects of high cholesterol take time to show, and you may not realise it until it’s a bit too late. Cholesterol, by itself, is important because it insulates nerve cells and membranes. Being a fatty substance, it does not dissolve in the blood and is packaged into protein.There are ‘good’ HDL cholesterol and ‘bad’ LDL cholesterol. Bad cholesterol can stick to the smooth lining of the blood vessels, where it is absorbed, while HDL mops up excess bad cholesterol and removes it from blood vessels. Even moderate physical activity can help increase HDL cholesterol. Exercise five days a week, whether you are overweight or underweight. Aerobic exercises like walking, cycling, swimming, slow jogging, dancing, etc.for 45 minutes, three times a week and anaerobic exercises like weight training, and sprinting, for another three days will help increase good and reduce bad cholesterol. In order to maximize your cardiovascular fitness, aerobic exercises should raise your heart rate to a certain level. This level is called your target heart zone. Keep your heart rate elevated for at least 20 minutes. Always warm up, stretch, and cool down-relax-before and after any workout to avoid injuries. All these contribute to a healthier and fitter life.1. On the basis of your reading of the above passage, make notes on it using headings and sub-headings.2. Write a summary of the passage and suggest a suitable title. |
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Answer» 1. Notes: 2. Harmful impacts 3. Cholesterol amount controlled 4. How to control 5. Types of cholesterol 6. For a healthier and fitter lifestyle. 2. Summary |
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| 9012. |
Where does triple fusion take place in a flowering plant? Why is it so called? Mention its significance. |
Answer»
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| 9013. |
Algae differ from Riccia ana Marchantia in havinga) Multicellular body b) Multicellular sex organs c) Pyrenoids in the cell d) Thalloid body |
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Answer» Algae differ from Riccia ana Marchantia in having Pyrenoids in the cell |
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| 9014. |
Assertion : Nitogen - fixing bacteria in legume root nodules survive in oxygen - depleted cells of nodules. Reason : Leghaemoglobin completely removes oxygen from the nodule cells.A. Both A and R are true and R is the correct explanation of AB. Both A and R are true, but R is not the correct explanation of AC. A is true, but R is falseD. A and R are false |
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Answer» Correct Answer - B Enzyme nitrogenase is sensitive to `O_(2)` and therefore, it is found in oxygen depleted cells. In the cells of root nodules leghaemogiobin is present and pigment is an oxygen scavenger. Hence, it provides anaerobic condition to nitrogen fixing bacteria. |
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| 9015. |
Name the hormones secreted from a exocrine gland. |
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Answer» Exocrine gland do not produce hormones. Exocrine glands are glands that secrete chemical substances into ducts to be released. The chemical substances secreted by endocrine glands are called hormones. Some exocrine glands also produce hormones. Some glands have both exocrine and endocrine parts. One of the example of such gland is pancreas. The pancreas has exocrine part which secrete digestive enzymes and an endocrine part, which secrete hormones (insulin, glucagon etc). |
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| 9016. |
A large cluster of ribosome is called- (a) Megasome (b) Microsome (c) Oligosome (d) Polyribosome |
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Answer» A large cluster of ribosome is called Polyribosome. |
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| 9017. |
Anemophily can be best seen in- (a) Sunflower (b) Maize (c) Fig (d) Yucca |
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Answer» Anemophily can be best seen in Maize. |
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| 9018. |
Explain the important stratergies to achieve green revolution in India? |
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Answer» The important stratergies are as noted below:
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| 9019. |
Observe the pictures given below and write the name and use of this equipment for diagnosis. |
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Answer» A. Stethoscope – to measure heartbeat B. Thermometer – To measure body temperature C. Sphygmomanometer – To record blood pressure. |
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| 9020. |
Given below is an equipment used for disease diagnosis.a) Identify the equipment b) What is its use? c) Name another equipment that works on the same principle. |
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Answer» a) ECG b) To record electric waves in heart muscles c) EEG |
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| 9021. |
The equipment used to record the electric waves in brain. a. EEG b. ECG c. CT Scan d. BCG |
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Answer» Correct option: a. EEG |
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| 9022. |
Artificial hormones should be handled with care. What is your opinion? |
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Answer» This statement is correct. Though artificial hormones are useful they should be handled with care as they are chemicals, which may cause health and environmental issues. |
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| 9023. |
The white blood cell that stimulates other white blood cells a. Neutrophil b. Basophil c. Eosinophil d. Monocyte |
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Answer» Correct option: b. Basophil |
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| 9024. |
The following figure shows the relationship of hypothalamus with an endocrine gland.a) Write down the name of endocrine gland marked as X b) Write down the name of hormone produced the A and B. c) Mention the functions of hormones produced the B. |
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Answer» a) Pituitary gland b) A – Tropic hormone B – Oxytocin and vasopressin c) Oxytocin helps to contraction of smooth muscles and vasopressin helps in the reabsorption of water in the kidneys. |
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| 9025. |
Identify the word pair relationship and complete the following.a) Alpha cells: GlucagonBeta Cells: ………b) Prolactin: Production of milk……….: Facilitate lactationc) Parathyroid: Parathormone Thyroid |
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Answer» a) Insulin b) Oxytocin c) Calcitonin |
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| 9026. |
Fill up the blanks by observing the relationship between the first pair.a. Calcium : Calcitonin Glucose : ………b. Breaks up stored food : Gibberellins. Promoting the growth of terminal buds :……c. Norepinephrine : Medulla Aldosterone : ………… |
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Answer» a. Insulin b. Auxin c. Cortex |
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| 9027. |
Pick the odd one out. Write the common features of the others.a) Increases metabolic rate, increases energy production regulates growth in children, promotes production of milk.b) Goitre, Acromegaly, Hypothyroidism, Hyperthyroidism.c) Cortisol, Vasopressin, Epinephrine, Norepinephrine.d) Ethylene, Cytokinin, Auxin, Pheromones. |
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Answer» a) Increases the production of milk: all others are the activities of thyroxine. b) Acromegaly: All others are disorders/diseases, related to thyroid gland c) Vasopressin: All others are hormones of adrenal gland d) Pheromones: All others plant hormones |
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| 9028. |
Observe the picture and answer the question given.a. Identify the white blood cells indicated by A, B. b. Write the defense activities of these white blood cells. |
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Answer» a. A – Neutrophil B – Basophil b.
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| 9029. |
The normal temperature of human body a. 36° C b. 37° C c. 38° C d. 39° C |
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Answer» Correct option: b. 37° C |
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| 9030. |
Observe the illustration given below and explain how hormones act in target cells. |
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Answer» The cell which are acted upon by hormones are called target cells. Only cells having specific receptors can receive a particular hormone. A hormone-receptor complex is formed by the . combination of each hormone molecule and its receptor. Following this, enzymes are activated within the cell. As a result, certain changes occur in cellular activities. |
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| 9031. |
Identify the word pair relationship and fill in the blanks.a) Civet cat:………Silkworm: Bombycolb) Breaks up stored food: Gibberellinshelps in fruit ripening: ………c) Vasopressin: Diabetes insipidusInsulin: ………d) Dwarfism: somatotropinMyxoedema: ………… |
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Answer» a) Civetone b) Ethylene c) Diabetes mellitus d) Thyroxine |
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| 9032. |
Observe the illustration, which show plant hormones and their functions and complete the following table suitably.Plant hormonesFuctionsAuxin(a) ..................Abscisic acid(b) .................(c) ...............break down of stored food in the seedCytokinin(d) .......................(e) ...........helps in the ripening of fruits |
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Answer» a) Cell growth, cell elongation, fruit formation b) Controls the dormancy of embryo in the seeds, dropping to leaves and fruits wilting of leaves, flowering, etc. c) Gibberellins d) Promotes cell division cell growth e) Ethylene. Artifical Plant Hormones Auxins: Naphthelene Acetic Acid (NAA), Indol Butyric Acid (IBA), etc., are used for sprouting and the prevention of dropping of premature fruits. 2.4-D (2, 4-Dichloro phenoxy acetic acid) is used as a weedicide. Gibberellins: It is used for increasing fruit size in grapes and apple and also for preventing ripening of fruits to assist in marketing. Abscisic acid: As it accelerates the dropping of fruit, it is used for harvesting fruits at the same time. Ethylene: Ethylene is used for the flowering of pineapple plants at a time and for the ripening of tomato, lemon, orange, etc. Ethyphon, a chemical which is available in liquid form gets transformed into ethylene when used in rubber trees, and it increases the production of latex. |
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| 9033. |
The renal clearance of a substance A. Is inversely related to its urinary concentration, U. B. Is directly related to the rate of urine formation, V. C. Is directly related to its plasma concentration, P. D. Is expressed in units of volume per unit time. E. Must fall in the presence of metabolic poisons. |
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Answer» A. False It is directly related to urinary concentration. B. True Clearance tends to fall at low urinary flow rates. C. False It is inversely related to plasma concentration. D. True Clearance = UV/P in units of volume/unit time. E. False It rises if the substance is normally reabsorbed by an active process. |
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| 9034. |
When infection becomes uncontrollable, the body temperature may rise very high.a. How is this situation known as? b. Write the reason for the rise in body temperature. c. How the rise in body temperature controls the infection? |
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Answer» a. Fever b. The presence of toxins produced by the pathogens stimulates white blood cells, the chemical substances produced by the white blood cells rise the body temperature. c. The rise in the body temperature reduces the rise of multiplication of pathogens, increases the effect of phagocytosis |
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| 9035. |
The vitamin that helps in blood clotting a. Vitamin A b. Vitamin Bc. Vitamin C d. Vitamin K |
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Answer» Correct option: d. Vitamin K |
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| 9036. |
Can a person with ‘A’ group blood receive blood from ‘B’ group person? Or it take place vice versa? Give reason for this. |
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Answer» A person with ‘A’ group blood cannot receive or donate blood with ‘B’ group person. Because the antigen present in the received blood and antibody in the recipient’s blood will react each other and form a blood clot (Coagulation). |
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| 9037. |
Observe the illustration given below and answer the questions.a) Write the names of the hormones ‘X’ and Y\b) Mention two actions that take place in A and B.c) Name the gland which synthesises X and Y. |
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Answer» a) X-Insulin; Y-Glucagon b) A-Converts glycogen to glucose B – Converts glucose to glycogen c) Pancreas |
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| 9038. |
Renal tubules normally reabsorb A. More water every hour than the entire plasma volume. B. All filtered HCO3- in respiratory acidosis. C. All filtered amino acids. D. All filtered plasma proteins. E. More K+ than Cl-. |
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Answer» A. True About 99 per cent of the glomerular filtrate (about 8 litres/hour). B. True This plus HCO3- manufactured in the kidney compensates the respiratory acidosis. C. True These are filtered but do not appear in normal urine. D. True Again some are filtered but do not appear in urine. E. False About 20 times as much chloride as potassium is filtered (this is the ratio of their plasma concentrations). |
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| 9039. |
As fluid passes down the proximal convoluted tubule, there is a fall of more than 50 per cent in the A. Concentration of sulphate ions. B. Concentration of sodium ions. C. Concentrations of amino acids. D. Concentration of potassium ions. E. Rate of filtrate flow in the tubules. |
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Answer» A. False Sulphate concentration rises since relatively more water than sulphate is reabsorbed. B. False It is little changed, since similar proportions of sodium and water are reabsorbed. C. True These are completely reabsorbed by active transport. D. False Potassium is reabsorbed in proportion to water. E. True Due to reabsorption of about 80 per cent of the water. |
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| 9040. |
Name the first vaccine? Who developed this? Write the situation which leads to the development of vaccine? |
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Answer» Smallpox vaccine, developed by Edward Jenner. He observed no smallpox disease in people who had affected cowpox earlier. |
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| 9041. |
Give more examples of vaccine |
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| 9042. |
Whichever be the type of germs infected, the initial symptom appear in human body will be the fever. Give reason. |
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Answer» Bacterial infection produces toxic substances in body, body temperature is suitable for bacterial growth, in order to control the growth of bacteria body rises the temperature, fever is not a disease. |
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| 9043. |
The graph representing the difference in the number of two bacteria, while applying a particular antibiotic on a patient is shown below.A. Analyze the graph and record the findings.B. Is this antibiotic effective against the bacteria? Why? |
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Answer» A. The harmful bacteria decrease in number in the first few weeks. Later they increase in number. Number of useful bacteria are decreasing gradually. B. The antibiotic is not effective because the harmful bacteria got resistance against it. Moreover, number of useful bacteria decreases. |
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| 9044. |
Our body has the capacity to destroy germs those enter the body by breaking the first level defense Write your comment on this statement?( Hints: inflammation, different types WBCs and their functions, phagocytosis) |
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Answer» The statement is true. When germs enter to the body the blood vessels diates (inflammation). This helps the white blood cells to act at the site A few white blood cells destroy germs by phagocytosis. |
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| 9045. |
Cause of all diseases are microorganisms. All microorganisms are pathogens. Evaluate this statement and justify your answer giving suitable examples. |
Answer»
eg: Bacteria seen in the intestine and skin. |
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| 9046. |
As plasma glucose concentration rises above normal, glucose A. Filtration increases linearly. B. Transport maximum Tm increases linearly. C. Clearance increases linearly. D. Reabsorption increases and then levels off. E. Excretion increases and then decreases. |
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Answer» A. True Filtration rate is directly proportional to concentration. B. False Transport maximum are constants. C. False It remains at zero until the Tm is reached and then it rises linearly. D. True It levels off after Tm glucose is reached. E. False It is initially zero and then rises linearly. |
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| 9047. |
In the nephron, the osmolality of fluid in the A. Tip of the loop of Henle is less than that of plasma. B. Bowman’s capsules is less than that in the distal tubules. C. Collecting duct rises when vasopressin is being secreted. D. Proximal convoluted tubule rises along its length. E. Medullary interstitium can exceed one osmole per litre. |
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Answer» A. False This fluid is hypertonic because of countercurrent concentration. B. False Distal tubular fluid is hypotonic. C. True Vasopressin (ADH) promotes water, but not salt, reabsorption in collecting ducts. D. False The fluid remains isotonic with plasma. E. True It can be about four times that of plasma. |
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| 9048. |
If, during an infusion of para-aminohippuric acid, peripheral venous plasma PAH level is 0.02 mg/ml (not above renal threshold), urinary PAH level is 16 mg/ml and urinary flow rate 1 ml/min, then the A. PAH level in renal venous blood must exceed 0.02 mg/ml.B. PAH level in renal arterial blood must be about 0.02 mg/ml. C. PAH level in glomerular filtrate must be about 0.02 mg/ml. D. Renal plasma flow is nearer 800 than 1000 ml/minute. E. Renal blood flow is nearer 1300 than 1500 ml/minute if the haematocrit is 0.40. |
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Answer» A. False The renal venous blood level would be negligible. B. True Since PAH is excreted only by the kidneys, the PAH level in peripheral venous blood determines the level entering the arterial system, and hence the renal arteries. C. True Since PAH is freely filtered. D. True Flow = PAH clearance = UV/P = 161/0.02 = 800 ml/minute. E. True Blood flow = plasma flow/0.6 = 1333 ml/minute. |
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| 9049. |
Which components of vaccine act as antigens? |
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Answer» The components from alive or dead or neutralized germs neutralized toxins or cellular parts of the pathogens will be the component of each vaccine. |
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| 9050. |
Whichever be the type of germs infected, the initial symptom appear in human body will be the fever Give reason. |
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Answer» Bacterial infection produces toxic substances in body body temperature is suitable for bacterial growth, in order to control the growth of bacteria body rises the temperature, fever is not a disease. |
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