Master every biological concept with our structured collection of 10th Biology Unit-Wise Question Papers. Biology requires a unique blend of conceptual clarity, precise technical vocabulary, and accurate diagram drawing. This page offers targeted, chapter-by-chapter test papers designed to evaluate your understanding of each unit independently—from life processes and control systems to genetics and evolution. Use these unit tests to systematically check your knowledge, practice essential labeling, and build a flawless foundation for your finals.
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S10 - Science - Biology
1. What is collateral vascular bundle?
2. Where does the carbon that is used in photosynthesis come from?
3. What is the common step in aerobic and anaerobic pathway?
4. Name the phenomenon by which carbohydrate is oxidized to release ethyl alcohol.
5. Give an account on vascular bundle of dicot stem?
6. Write short notes on mesophyll?
7. Draw and label the structure of oxysomes.
8. Name the three basic tissue systems in flowering plants.
9. What is photosynthesis?
10. Where does the photosynthesis occur in the cell?
11. What is respiratory quotient?
12. Why should the light dependent reaction occur before the light independent reaction?
13. Write the equation/reaction for photosynthesis.
14. Differentiate between monocot root and dicot root.
15. Differentiate between aerobic respiration and anaerobic respiration.
16. Name the three stages of cellular respiration.
17. Define glycolysis.
18. Define Kreb's cycle.
19. What is ETC?
20. Describe the three stages of cellular respiration that aerobic organisms use to obtain energy from glucose.
21. How does the light dependent reaction differ from the light independent reaction?
22. Write the reactant and end products of light dependent and light independent reactions?
1. Write the dental formula of rabbit.
2. How is diastema formed in rabbit?
3. How does leech suck blood from the host?
4. Why is the teeth of rabbit called heterodont?
5. Why are the ring of cartilages found in trachea of rabbit?
6. List out the parasitic adaptations in leech?
7. How is the circulatory system designed in leech to compensate the heart structure?
8. How does locomotion take place in leech?
9. Explain the male reproductive system of rabbit with a labelled diagram.
1. Why is the colour of the blood red?
2. What causes the opening and closing of stomata during transpiration?
3. What is cohesion?
4. What would happen to the leaves of a plant that transpires more water than its absorption in the roots?
5. Describe the structure and working of the human heart?
6. Why is circulation in man referred to as double circulation?
7. What are heart sounds? How are they produced?
8. What is importance of valves in the heart?
9. How are arteries and veins structurally different one another?
10. Why is the sinoatrial node called the pacemaker of heart?
11. Differentiate between systemic circulation and pulmonary circulation?
12. Give reason: The walls of the right ventricle are thicker than the right auricles.
13. Give reason: Mature RBC in mammals do not have cell organelles.
14. How do plants absorb water? Explain
15. What is transpiration? Give the importance of transpiration?
16. Differentiate between systole and diastole.
17. Enumerate the functions of blood?
1. Define stimulus?
2. Name the parts of the brain?
3. Write the name of the structure involved in the protection of brain?
4. Define reflex arc.
5. Differentiate between voluntary and involuntary action.
6. Differentiate between medullated and non-medullated nerve fiber.
7. Explain the structure of neuron with neat labelled diagram.
8. Illustrate the structure and function of brain.
9. Classify neurons based on its structure.
1. Write the name of a synthetic auxin.
2. What is synthetic auxin? Give example.
3. What is bolting? How can it be induced artificially?
4. Bring out any two physiological activities of abscisic acid
5. What will you do to prevent leaf fall and fruit drop in plants? Support your answer with reason.
6. What are chemical messengers?
7. Write the difference between endocrine and exocrine gland.
8. What is the role of parathormone?
9. What are the hormones secreted by posterior lobe of the pituitary glands?
10. Why are thyroid hormones referred as personality hormones?
11. Which hormone requires iodine for its formation?
12. Name the gaseous plant hormone describe its action in plants.
13. Write the physiological effects of gibberellins?
14. Where are estrogen produced?
15. What is the role of estrogen in the human body?
16. What are the conditions which occur due to lack of ADH and Insulin? How are the conditions different from one another?
1. What will happen if you cut planaria into small fragments?
2. Why is vegetative propagation practiced for growing some type of plants?
3. How does binary fission differ from multiple fission?
4. Define triple fusion.
5. Name the secondary sex organs in male.
6. What is colostrum?
7. How is milk production hormonally regulated?
8. How can menstrual hygiene be maintained during menstrual days?
9. How does developing embryo gets its nourishment inside the mother body?
10. Write the events involved in the sexual reproduction of flowering plants.
11. Identify the parts a, b, c and d.
12. With your neat labelled diagram describe the parts of a typical angiospermic ovule.
13. What are the phases of menstrual cycle?
14. Explain the events of menstrual cycle.
1. Why did Mendel select pea plant for his experiments?
2. What do you understand by the term phenotype and genotype?
3. What are allosomes?
4. What is Okazaki fragments?
5. Why is euploidy considered to be advantageous to both plants and animals?
6. Explain the structure of a chromosome.
7. How is the structure of DNA organized?
8. What is the biological significance of DNA?
1. The degenerated wing of a kiwi is an acquired character. Why is it an acquired character?
2. Why is Archaeopteryx considered to be a connecting link?
3. Define ethnobotany and write its importance?
4. How can you determine the age of the fossils?
5. Natural selection is a driving force for evolution. How?
6. Differentiate homologous organs from analogous organs?
7. How does fossilization occur in plants?
1. Define genetic engineering.
2. Name the types of stem cells.
3. What are transgenic organisms?
4. Discuss the method of breeding for disease resistance.
5. Name the three improved characteristics of wheat that helped India to achieve high productivity.
6. Distinguish between somatic gene therapy and germ line gene therapy.
7. Differentiate between undifferentiated cells and differentiated cells.
8. State the applications of DNA fingerprinting technique.
9. How are stem cells useful in regenerative process?
10. Differentiate between outbreeding and inbreeding.
11. What are the effects of hybrid vigour in animals?
12. Describe mutation breeding with an example.
13. Biofortification may help in removing hidden hunger. How?
14. With a neat labelled diagram explain the techniques involved in gene cloning.
15. Discuss the importance of biotechnology in the field of medicine.
1. What are psychotropic drugs?
2. Mention the diseases caused by tobacco smoke.
3. What are the contributing factors for obesity?
4. What is adult-onset diabetes?
5. What is metastasis?
6. How does Insulin deficiency occur?
7. What are the various routes by which transmission of human immunodeficiency virus takes place?
8. Differentiate between type I and type II Diabetes Mellitus.
9. Why is dietary restriction recommended for an obese individual?
10. What precautions can be taken for preventing heart disease?
11. Suggest measures to overcome the problems of an alcoholic.
12. Change in lifestyle is a risk factor for occurrence of cardiovascular diseases. Can it be modified? If yes, suggest measures for prevention.
1. Why fossil fuels are to be conserved?
2. Solar energy is a renewable energy. How?
3. How are e-wastes generated?
4. Name the agents of soil erosion?
5. What is the importance of rainwater harvesting?
6. What are the advantages of using biogas?
7. What are the environmental effects caused by sewage?
8. What are the consequences of deforestation?
9. How does rainwater harvesting structures recharge of ground water?
10. How will you prevent soil erosion?
11. Enumerate the importance of forest.
12. What are the consequences of soil erosion?
13. Why is management of forest and wildlife resource considered as a challenging task?
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