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Question : (a) What is ovulation ? How often does it happen in human females ? (b) Where does fertilisation take place in human females ? (c) Explain why, fertilisation is possible if mating takes place during the middle of menstrual cycle . (d) What is meant by implantation? (e) What is placenta ? What is its function ? (f) What joins embryo to placenta in mother's body ?

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SOLUTION :N//A


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