Zoology - Reproduction in Organisms Important Question Paper

12th Standard EM

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Biology

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. In which type of parthenogenesis are only males produced?

    (a)

    Arrhenotoky

    (b)

    Thelytoky

    (c)

    Amphitoky

    (d)

    Both a and b

  2. Animals giving birth to young ones:

    (a)

    Oviparous

    (b)

    Oviviviparous

    (c)

    Viviparous

    (d)

    Both a and b

  3. Assertion and reasoning questions:
    In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
    Assertion: Viviparous animals give better protection to their off springs.
    Reason: They lay their eggs in the safe places of the environment

    (a)

    If both A and R are true and R is correct explanation for A

    (b)

    If both A and R are true but R is not the correct explanation for A

    (c)

    If A is true but R is false

    (d)

    If both A and R are false

  4. During favourable conditions ______ shows multiple fission.

    (a)

    Plasmodium

    (b)

    Amoeba

    (c)

    Planaria

    (d)

    Euglena

  5. Plasmotomy is observed in ________

    (a)

    Giant Amoeba

    (b)

    Hydra

    (c)

    Plasmodium

    (d)

    Ceratium

  6. 5 x 2 = 10
  7. Name an organism where cell division is itself a mode of reproduction.

  8. Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

  9. Name the types of fission.

  10. What is peculiar about the cell division of paramecium?

  11. What are exogenous buds?

  12. 5 x 3 = 15
  13. The unicellular organisms which reproduce by binary fission are considered immortal. Justify

  14. Why is the offspring formed by asexual reproduction referred as a clone?

  15. What is asexual reproduction?

  16. Explain multiple fission in plasmodium.

  17. Explain encystment in amoeba.

  18. 4 x 5 = 20
  19. How is juvenile phase different from reproductive phase?

  20. What is the difference between syngamy and fertilization?

  21. Write a note on regeneration.

  22. Describe the regeneration process noticed in living organism.

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