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Reproduction In Animals

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Science

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Science

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Differentiate between internal fertilization and external fertilization.


The differences between internal fertilization and external fertilization are: 

i. Internal fertilization takes place inside the body of the female while the external fertilization takes place outside the body of the female.

ii. In case of internal fertilization sperms are ejaculated in female’s body by the male. In external fertilization sperms are discharged outside the body of the female.


Explain the importance of reproduction in organisms.


Reproduction is an important process as it ensures the continuation of similar kinds of individuals, generation after generation.


Describe the process of fertilisation in human beings.


The fusion of male and female gamete is called fertilization. Internal fertilization takes place in humans. Male releases sperms inside female’s body. Sperms and ovum fuse together in fallopian tube, during fertilization, the nuclei of the sperm and the egg fuse to form a single nucleus. This results in the formation of the zygote.

 


Choose the most appropriate answer :

Internal fertilisation occurs

  • in female body.

  • outside female body.

  • in male body.

  • outside male body.


A.

in female body.


Choose the most appropriate answer :

A tadpole develops into an adult frog by the process of

  • fertilisation.

  • metamorphosis.

  • embedding.

  • budding.


B.

metamorphosis.


Choose the most appropriate answer :

The number of nuclei present in a zygote is

  • none.

  • one.

  • two.

  • four.


B.

one.