CBSE Class 12 Biology Reproduction In Organisms Worksheet Set B



1. What is a clone?

2. What are vegetative propagules?

3. What are the vegetative propagules in eichhornic, potato, onion, ginger, penicillium, sponge

4. Name the plant which flowers once in 12 yrs.

5. Explain embryogenesis in plants

6. Explain embryogenesis in animals.

7. Disadvantages of external fertilization

8. Differentiate Zoospore and Zygote

9. Explain why meiosis and embryogenesis are interlinked.

10. What is sporulation?

11. What do you mean by the term uniparental?

12. A moss plant produces a large no. of antherozoids but a few egg cells. Wy?

13. What is parthenogenesis? Give few examples from animals.

14. Amoeba is immortal. Explain.

15. What is a fruit, seed and embryo?

16. The number of chromosomes in the shoot tip cells of maize plant is 20. What will be the number of chromosomes in the gametes and microspore mother cells of the same plant?

17. Explain the events of sexual reproduction.

18. What do you mean by seasonal breeders.

19. Name 2 plant groups with diploid plant body.

20. Mention a characteristic feature and a function of Zoospores in some algae.

21. Mention the site where syngamy takes place in amphibians and reptiles respectively.

22. List 2 main pre-fertilisation events.

23. Technical term to denote unisexual condition

24. Differentiate parthenogenesis and parthenocarpy.

25. Name 2 plant groups having haploid body

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