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In spermatogenesis, reduction division o...

In spermatogenesis, reduction division of chromosome occurs during conversion of

A

spermatogonia to primary spermatocytes

B

primary spermatocytes to secondary spermatocytes

C

secondary spermatocytes to spermatids

D

spermatids to sperms.

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The correct Answer is:
B
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NCERT FINGERTIPS-HUMAN REPRODUCTION-Human Reproduction
  1. What does the given figure represent?

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  2. In spermatogenesis, the phase of maturation involves

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  3. In spermatogenesis, reduction division of chromosome occurs during con...

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  4. Which of the following is group of cells in the male gonad, represent ...

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  5. Consider the following statements each with two blanks. (A) Seminife...

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  6. The process of release of spermatozoa from Sertoli cells into cavity o...

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  7. The correct sequence of spermatogenetic stages leading to the formatio...

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  8. Given below is an incomplete flow chart showing influence of hormones ...

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  9. Spermatogenesis is induced by

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  10. The given table shows differences between spermato-genesis and spermio...

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  11. Identify the parts labelled as A, B, C, D and E in the given diagram o...

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  12. The middle piece of the sperm contains

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  13. Consider the following three statements related to the human male repr...

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  14. The principal tail piece of human sperm shows the microtubular arrange...

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  15. A cross section at the midpoint of the middle piece of a human sperm w...

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  16. Acrosome is a type of

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  17. Which of the following contains the actual genetic part of a sperm ?

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  18. The sperm undergo physiological maturation, acquiring inreased motilit...

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  19. At what stage of life is oogenesis initiated in a human female?

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  20. A human female is born with a million of eggs (primary oocyte) at the ...

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