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Preparation of sperm before penetration ...

Preparation of sperm before penetration of ovum is

A

spermiation

B

cortical reaction

C

spermiogenesis

D

capacitation.

Text Solution

Verified by Experts

The correct Answer is:
D
The secretions of the female genitaltract remove coating substances dceposited on the surface of the sperms particulary those on the acrosome. Thus, the receptor sites on the acrosome are exposed and sperm becomes active to penetrate the egg. This phenomennon of sperm activation in mammals is known as capacitation.
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Fertilisation and sperm penetration and 30 questions

NCERT FINGERTIPS-HUMAN REPRODUCTION-Human Reproduction
  1. The sperm and the egg make different contributions to zygote which of ...

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  2. Some important events that take place during fertilisation are given b...

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  3. Preparation of sperm before penetration of ovum is

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  4. The sex of the fetus will be decided at

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  5. What is true aobut cleavage in the fertilised egg in humans?

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  6. Cleavage differes from mitosis in lacking

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  7. The solid mass of 8-16 cells formed from zygote after successive mitot...

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  8. given below are four statements (i)-(iv) reagarding embryonic developm...

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  9. Identify the human developmental stage shown as well as the related ri...

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  10. Statement-1: Upto morula stage, the cells divide without any increase ...

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  11. Match column I with column II and select the correct option from the c...

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  12. Implantation takes place after of fertilisation.

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  13. identify the labelled parts A-D in the given figure of human foetus wi...

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  14. Structure connecting the fetus to placenta is

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  15. The main function of trophoectodrm

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  16. Why cannot a woman get pregnant again during pregnancy?

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  17. Fetus gets nourishment and oxygen through

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  18. hCG, hPL and relaxin are produced in women

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  19. Which of the following hormones is not a secretory product of human pl...

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  20. Urine test during pregnancy determines the presence of

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