Explain the importance of reproduction in organisms.
Describe the process of fertilisation in human beings.
Choose the most appropriate answer :Internal fertilisation occurs
(a) in female body.(b) outside female body.(c) in male body.(d) outside male body.
Choose the most appropriate answer :A tadpole develops into an adult frog by the process of
(a) fertilisation.(b) metamorphosis.(c) embedding.(d) budding.
Choose the most appropriate answer :The number of nuclei present in a zygote is
(a) none.(b) one.(c) two.(d) four.
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Male reproductive organs consist of a pair of testes, sperm ducts and penis. Testes are responsible for producing male gamete called sperm. Testes produce the male hormone testosterone.