Very Short Answer Type Questions – Topic-wise

1. Basic Concepts of ReproductionIntroduction

1. Q1. What is reproduction? Answer: Reproduction is the biological process by which living organisms produce new individuals of their own kind.
2. Q2. Why is reproduction important? Answer: Reproduction is important to continue the species and maintain the continuity of life on Earth.
3. Q3. Name the two main modes of reproduction in animals. Answer: Sexual reproduction and asexual reproduction.
4. Q4. What are gametes? Answer: Gametes are special reproductive cells, such as sperms and ova, which fuse during sexual reproduction.
5. Q5. State one difference between sexual and asexual reproduction. Answer: Sexual reproduction involves two parents, whereas asexual reproduction involves only one parent.

2. Human Male Reproductive SystemSexual Reproduction

6. Q6. Name the primary reproductive organs in males. Answer: The primary reproductive organs in males are the testes.
7. Q7. What is the function of testes? Answer: Testes produce male gametes called sperms and secrete male hormones.
8. Q8. What is the role of the sperm duct (vas deferens)? Answer: The sperm duct transports sperms from the testes to the urethra.
9. Q9. Name the tube that carries sperms out of the male body. Answer: The urethra carries sperms out of the male body.
10. Q10. What is a sperm? Answer: A sperm is a microscopic male gamete having a head, middle piece and a tail.

3. Human Female Reproductive SystemSexual Reproduction

11. Q11. Name the primary reproductive organs in females. Answer: The primary reproductive organs in females are the ovaries.
12. Q12. What is produced by the ovaries? Answer: Ovaries produce female gametes called ova or eggs and also secrete female hormones.
13. Q13. What are oviducts? Answer: Oviducts, or fallopian tubes, are tubes that carry the ovum from the ovary to the uterus.
14. Q14. Name the organ where the embryo develops. Answer: The embryo develops in the uterus.
15. Q15. What is the function of the vagina? Answer: The vagina serves as the passage for sperms to enter and also as the birth canal during childbirth.

4. Fertilisation and Zygote FormationCore Concepts

16. Q16. Define fertilisation. Answer: Fertilisation is the fusion of the male gamete (sperm) and female gamete (ovum) to form a zygote.
17. Q17. What is a zygote? Answer: A zygote is the single cell formed after the fusion of sperm and ovum.
18. Q18. Where does fertilisation usually take place in humans? Answer: In humans, fertilisation usually takes place in the oviduct (fallopian tube).
19. Q19. What is internal fertilisation? Answer: Internal fertilisation is fertilisation that occurs inside the body of the female.
20. Q20. What is external fertilisation? Answer: External fertilisation is fertilisation that occurs outside the body of the female, usually in water.
21. Q21. Give one example of an animal showing internal fertilisation. Answer: Humans show internal fertilisation.
22. Q22. Give one example of an animal showing external fertilisation. Answer: Frogs show external fertilisation.

5. Embryo, Foetus and Types of AnimalsDevelopment

23. Q23. How is an embryo formed? Answer: The zygote divides repeatedly to form a multicellular structure called the embryo.
24. Q24. What is a foetus? Answer: When the body parts of the embryo become distinct, it is called a foetus.
25. Q25. What is the role of the uterus in reproduction? Answer: The uterus provides protection and nourishment to the developing embryo/foetus.
26. Q26. What are oviparous animals? Answer: Oviparous animals are animals that lay eggs.
27. Q27. What are viviparous animals? Answer: Viviparous animals are animals that give birth to young ones.
28. Q28. Give one example of an oviparous animal. Answer: Hen is an example of an oviparous animal.
29. Q29. Give one example of a viviparous animal. Answer: Cow is an example of a viviparous animal.

6. Metamorphosis in FrogLife Cycle

30. Q30. What is metamorphosis? Answer: Metamorphosis is a drastic change in the body form of an animal during its life cycle.
31. Q31. Name the larval stage of a frog. Answer: The larval stage of a frog is called tadpole.
32. Q32. Where does a frog lay its eggs? Answer: A frog lays its eggs in water.
33. Q33. How does a tadpole breathe? Answer: A tadpole breathes through gills.
34. Q34. State one difference between a tadpole and an adult frog. Answer: A tadpole has a tail and lives only in water, while an adult frog has no tail and can live on land as well as in water.

7. Asexual Reproduction – Amoeba and HydraAsexual Mode

35. Q35. What is asexual reproduction? Answer: Asexual reproduction is reproduction in which only one parent is involved and no gamete fusion takes place.
36. Q36. Name the method of asexual reproduction in Amoeba. Answer: Amoeba reproduces by binary fission.
37. Q37. What is binary fission? Answer: Binary fission is a type of asexual reproduction in which one cell splits into two identical daughter cells.
38. Q38. Name the method of asexual reproduction in Hydra. Answer: Hydra reproduces by budding.
39. Q39. What is budding? Answer: Budding is a type of asexual reproduction in which a small outgrowth (bud) develops on the parent and later detaches as a new individual.
40. Q40. Give one example of budding in a unicellular organism. Answer: Yeast reproduces by budding.

8. Key Terms and Quick ConceptsDefinitions

41. Q41. Define the term embryo. Answer: An embryo is the early stage of development of the baby from the zygote.
42. Q42. What is meant by fertilised egg? Answer: A fertilised egg is an ovum that has fused with a sperm to form a zygote.
43. Q43. Name the structure that connects the embryo/foetus to the mother. Answer: The placenta connects the embryo/foetus to the mother.
44. Q44. Which cell carries the characters from the father to the child? Answer: The sperm carries the characters from the father to the child.
45. Q45. Which cell carries the characters from the mother to the child? Answer: The ovum (egg) carries the characters from the mother to the child.

9. Mixed Exam-style Very Short QuestionsExam Practice

46. Q46. Name the process by which a zygote develops into an embryo. Answer: The zygote develops into an embryo by repeated cell division.
47. Q47. Why do frogs produce a large number of eggs? Answer: Frogs produce many eggs to ensure that at least some survive, as many are destroyed by predators or harsh conditions.
48. Q48. Name any two animals that show internal fertilisation. Answer: Humans and cows show internal fertilisation.
49. Q49. Name any two animals that show external fertilisation. Answer: Frogs and many fish show external fertilisation.
50. Q50. Which type of reproduction produces offspring identical to the parent and why? Answer: Asexual reproduction produces identical offspring because there is only one parent and no mixing of gametes.