REPRODUCTION IN ANIMALS | Chapter 9 | NCERT Class 8 Science Book Question Answer Solution for Assam |

 Chapter 9

 

REPRODUCTION IN ANIMALS 

1. Explain the importance of reduction in organisms.

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2. Describe the process of fertilisation in human beings.

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3. Choose the most appropriate answer.

    (a) Internal fertilisation occurs 

            (i) in female body.

            (ii) outside female body.

            (iii) in male body.

            (iv) outside male body.

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  (b) A tadpole develops into  an adult frog by the process of

    (i) fertilisation    (ii) metamorphosis    (iii) embedding    

    (iv) budding

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 (c) The number of nuclei present in a zygote is

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4. Indicate whether the following statements are True (T) or False (F).

    (a) Oviparous animals give birth to young ones.            ( ) 

    (b) Each sperm is a single cell.                                         ( ) 

    (c) External fertilisation takes place in frog.                   ( )

    (d) A new human individual develops from a cell called gamete.

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    (e) Egg laid after fertilisation is made up of a single cell. ( )

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    (f) Amoeba reproduces by budding.                                    ( )

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    (g) fertilisation is necessary even in asexual reproduction.  ( )

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    (h) Binary fission is a method of asexual reproduction.    ( )   

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    (i) A zygote is formed as a result of fertilisation.                ( )

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    (j) An embryo is made up of a single cell.                        ( )

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5. Give two differences between a zygote and a foetus.

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6. Define asexual reproduction. Describe two methods of asexual reproduction in animals.

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7. In which female reproductive organ does the embryo get embedded?

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8. What is metamorphosis? Give examples.

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9. Differentiate between internal fertilisation and external fertilisation.

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Type- Ankur Moni Nath

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