Q12 of 290 Page 168

Define sexual reproduction.

Sexual reproduction is a form of reproduction in which fusion of two special reproductive cells called 'sex cells' takes place.


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10

Where is the female gamete formed :

(i) in humans ?


(ii) in flowering plants ?

 11

Name two animals which undergo external fertilisation and two animals which undergo internal fertilisation?

 13

Do all organisms give birth to individuals like humans?

 14

Write the full forms of the following as they occur in biology:

(i) STD (ii) AIDS (iii) HIV