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Human Reproduction

Fill In the Blanks

21. A secondary oocyte has a .................. chromosome number while a fertilised ovum has a..................chromosome number.

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One Word Answers

22. The tube which extends from vestibule to uterus in the female is called.

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23. It is the external genital opening of the female mammal.

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24. The process by which testes produce spermatozoa from its male germ cells by meiotic division.

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25. The process by which ovary produces ova or eggs from its female germ cells by meiotic division.

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26. Development of a fully formed animal directly from an unfertilized ovum.

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Short Answer Type

27. What is the function of Sertoli cells ?

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28. What is Colostrum ?

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29. Define spermiogenesis. Where does it occur ?

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30. How does colostrum provide initial protection against diseases to new born infants ? Give one reason.

The colostrum has several antibodies which are essential to develop resistance in the new born babies. Since the new borns do not have their own antibodies the antibodies in the colostrum provides the initial protection against diseases.

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