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Some important events that take place du...

Some important events that take place during fertilisation are given below. Arrange the events in a proper sequence and select the correct option.
(i). Cortical reaction
(ii). Sperm entry
(iii). Karyogamy
(iv). Acrosomal reaction

A

`(iv)to(i)to(ii)to(iii)`

B

`(i)to(ii)to(iii)to(iv)`

C

`(iv)to(ii)to(i)to(iii)`

D

`(ii)to(i)to(iii)to(iv)`

Text Solution

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The correct Answer is:
A
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NCERT FINGERTIPS-HUMAN REPRODUCTION-Human Reproduction
  1. Besides activating the egg, another role of a sperm is to carry to egg

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  2. The sperm and the egg make different contributions to zygote which of ...

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

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  4. Preparation of sperm before penetration of ovum is

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  5. The sex of the fetus will be decided at

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

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  7. Cleavage differes from mitosis in lacking

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

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

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

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

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

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  13. Implantation takes place after of fertilisation.

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

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  15. Structure connecting the fetus to placenta is

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  16. The main function of trophoectodrm

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

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  18. Fetus gets nourishment and oxygen through

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  19. hCG, hPL and relaxin are produced in women

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

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