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How many eggs are released by a human ov...

How many eggs are released by a human ovary in a month ? How many eggs to do think would have been released , if the mother gave birth to identical twins ? Would you answer change if the twins born were fraternal ?

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(i) Human ovary produces only one egg in a month. (ii) As the identical twins are monozygotic and are produced from two parts of the same zygote so only one egg was released from the ovary. (iii) As the fraternal twins are dizygotic and are produced from two different zygotes which is possible only if two eggs are released from the ovaries in a month.
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MODERN PUBLICATION-HUMAN REPRODUCTION-NCERT FILE (EXERCISE QUESTION)
  1. Draw a labeled diagram of male reproductive system.

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  2. Draw a labeled diagram of female reproductive system. Answer

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  3. Write two major functions each of testis and ovary.

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  4. Describe the structure of a seminiferous tubule.

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  5. What is spermatogenesis? Briefly describe the process of spermatogenes...

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  6. Name the hormones involved in regulation of spermatogenesis.

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  7. Define spermiogenesis and spermiation.

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  8. Draw a labeled diagram of sperm.

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  9. What are the major components of seminal plasma?

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  10. What is oogenesis? Give a brief account of oogenesis.

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  11. What are the major functions of male accessory ducts and glands?

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  12. Draw a labeled diagram of a section through ovary.

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  13. Draw a labeled diagram of a Graafian Follicle?

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  14. Name the functions of the following. (a) Corpus luteum (b) End...

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  15. What is menstrual cycle ? Name the hormones that regulate menstrual cy...

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  16. what is parturition ? Which hormones are involved in induction of part...

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  17. In our society a woman is often blamed for not bearing male child. Do ...

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  18. How many eggs are released by a human ovary in a month ? How many eggs...

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  19. How many eggs do you think were released by the ovary of a female dog ...

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