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12th Standard English Medium Biology (Zoology) Subject Reproduction in Organisms Creative 2 Mark Questions with Solution Part - I

Published on: 19/06/2021

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Std: 12th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 2

5 x 2 = 10

With regard to asexual reproduction. mention two phenomena seen is Hydra.

What is exogamy?

What is syngamy?

What are exogenous buds?

What is peculiar about the cell division of paramecium?

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Answers Key:

Generic 2

5 x 2 = 10

Budding and Regeneration.

It is a type of fertilization. In exogamy, the male and female gametes are produced by different parents and they fuse to form a zygote. So it is biparental. E.g. Human - dioecious or unisexual animal.

In syngamy, the fusion of two haploid gametes takes place to produce a diploid zygote.

When buds are formed on the outer surface of the parent body, it is known as exogenous budding. E.g. Hydra.

In paramecium, the macronucleus divides by amitosis and the micronucleus divides by mitosis.