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12th Standard Zoology - Reproduction in Organisms English Medium Free Online Test One Mark Questions 2020 - 2021

12th Standard

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Zoology

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. In which type of parthenogenesis are only males produced?

    (a)

    Arrhenotoky

    (b)

    Thelytoky

    (c)

    Amphitoky

    (d)

    Both a and b

  2. The mode of sexual reproduction in bacteria is by ______.

    (a)

    Formation of gametes

    (b)

    Endospore formation

    (c)

    Conjugation

    (d)

    Zoospore formation

  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.
    Codes:
    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.

    (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. Multiple fission is seen in _______

    (a)

    Vorticella and ceratium

    (b)

    Plasmodium and paramecium

    (c)

    Amoeba and cyanobacteria

    (d)

    Vorticella and plasmodium

  5. Plasmotomy is observed in ________

    (a)

    Giant Amoeba

    (b)

    Hydra

    (c)

    Plasmodium

    (d)

    Ceratium

  6. Gemmules are ______

    (a)

    Exogenous growth

    (b)

    Daughter nuclei

    (c)

    Internal buds

    (d)

    Regenerated parts

  7. Conjugation is a type of ______

    (a)

    Asexual reproduction

    (b)

    Autogamy

    (c)

    External fertilization

    (d)

    Sexual reproduction

  8. Isogamy is observed in ______

    (a)

    Monocystis

    (b)

    Mammals

    (c)

    Trichonympha

    (d)

    Reptiles

  9. Paedogenetic parthenogenesis occurs in: ______

    (a)

    Gall fly

    (b)

    Honey bees

    (c)

    Aphis

    (d)

    Solenobia

  10. This is a method of sexual reproduction in which individuals of the same species temporarily write and exchange certain. amount of nuclear material and then get separated.

    (a)

    Syngamy

    (b)

    Conjugation

    (c)

    Parthenogenesis

    (d)

    Paedogenesis

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