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Question 1., , Explain the importance of reproduction in, organisms., , Answer., , The production of new individuals from their, parents is known as reproduction., Reproduction is very important as it ensures, the continuation of a species. If the process, of reproduction does not exist, the species, would get vanished from the earth., , Scanned with CamScanner

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Question 2., , Describe the process of fertilisation in human, beings., , Answer., , The first step in the process of reproduction, is the fusion of a sperm and an ovum. Millions, of sperms from the male are transferred into, the female body. The sperms swim in the, oviduct with the help of their tails to reach the, egg. When they come in contact with the egg,, one of the sperms may fuse with the egg., , Scanned with CamScanner

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Such fusion of the egg and the sperm is, called fertilization. During fertilization, the, nucleus of the sperm and the egg fuse to, form a single nucleus. This results in the, formation of a fertilized egg or zygote., , Scanned with CamScanner

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Question 3., , Choose the most appropriate answer:, (a) Internal fertilisation occurs, , (i) in female body., , (il) outside the female body., , (Ili) in male body., , (iv) outside male body., , Answer., , (i) in female body., , Scanned with CamScanner

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(b) A tadpole develops into an adult frog by, , the process of, (I) fertilisation., , (il) metamorphosis., , (ili) embedding., (iv) budding., Answer., , (ii) metamorphosis., , Scanned with CamScanner