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During fertilixation, a sperm comes in c...

During fertilixation, a sperm comes in contact with the which layer of the ovum.

A

Jelly coat

B

Zona pellucida

C

Vitelline membrane

D

Perivitelline space

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The correct Answer is:
B
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During fertilixation, a sperm comes in contact with the which layer of the own.

Assertion: Only one sperm can fertilise an ovum. Reason: During fertilisation, a sperm comes in contact with zona pellucida layer of the ovum and induces changes in the membrane that blocks the entry of additional sperms.

Fill up the blanks in the following paragraph by selecting the correct option. During copulation (coitus) semen is released by the penis into the vagina and is called (i)._____.the ovum released by the ovary is transported to the (ii)._____where (iii).______takes place during fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of (iv)._____The secretions of the (v)._____help the sperm enter into the cytoplasm of the ovum.

which of the following statements regarding fertilization and implantation are incorrect ? I. During fertilization , a sperm first comes in contact with the corona radiata cells produced by the ovum. II. Fertilization occurs only if sperm and ovum are simultaneously transported to the ampullary region. III. Implantation occurs about 7 days after fertilization . IV. The continuous division of morula leads to the formation of zygote.

Name chief layers of human ovum.

What happens during fertilisation in humans after many sperms reach close to the ovum ?

What happens during fertilization in humans after many sperms reach close to the ovum?

MOTION-HUMAN REPRODUCTION -EXERCISE - 2 (NCERT BASED QUESTIONS)
  1. During Implantation, the blastocyst beco,es embedded in which layer of...

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  2. The mitotic division starts as the zygote moves through the of the ov...

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  3. During fertilixation, a sperm comes in contact with the which layer of...

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  4. Function of placenta is-

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  5. Stem cells are found in:-

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  6. The first sign of growing foetus may be noticed by :–

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  7. Placenta contains:-

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  8. The average duration of human pregnancy is about nine months which is ...

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  9. The signals for parturition orginate from:

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  10. Which hormone acts on the uterine contraction during parturition?

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  11. Which gland of female undergo differentiation during pregnancy?

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  12. Which is correct for colostrum?

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  13. What would happen if vasa deferentia of man are cut?

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  14. If the epididymis is being removed, then what will happen ?

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  15. Which is not correct about sustentacular cells

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  16. Somatic chromosome number is 40. what shall be chromosome number in th...

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  17. If cowper's gland is removed which of the following will be affected

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  18. Which of the following releases inhibin to control spermatogenesis ?

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  19. The sperm producing substance of enzymatic nature of sperm lysin. In m...

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  20. Correct order of spermatogenesis is :-

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