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Reproduction in Organisms - 1mark: part 2

12th Standard EM

    Reg.No. :
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Biology

choose the correct answer:
Time : 00:30:00 Hrs
Total Marks : 10
    Part - A
    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. Animals giving birth to young ones:

    (a)

    Oviparous

    (b)

    Oviviviparous

    (c)

    Viviparous

    (d)

    Both a and b

  3. The mode of reproduction in bacteria is by

    (a)

    Formation of gametes

    (b)

    Endospore formation

    (c)

    Conjugation

    (d)

    Zoospore formation

  4. In which mode of reproduction variations are seen

    (a)

    Asexual

    (b)

    Parthenogenesis

    (c)

    Sexual

    (d)

    Both a and b

  5. 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

  6. Human beings exhibit ______

    (a)

    Hologamy

    (b)

    Exogamy

    (c)

    Isogamy

    (d)

    Paedogammy

  7. Ovovivipary is seen in ______

    (a)

    Solenobia

    (b)

    Humans

    (c)

    Birds

    (d)

    Shark

  8. The gravid proglottids are cut off from the parent body in ______

    (a)

    Tapeworm (Taenia solium)

    (b)

    Liver fluke

    (c)

    Planaria

    (d)

    Blood fluke

  9. Exchange of certain amount of nuclear material during sexual reproduction is called _______

    (a)

    strobilation

    (b)

    conjugation

    (c)

    pedal laceration

    (d)

    sporulation

  10. Identify the mismatched pair.

    (a)

    Paedogenesis - Liver fluke

    (b)

    Strobilation - Aurelia

    (c)

    Amphitoky - Honeybee

    (d)

    Encystment - Amoeba

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