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What happens during fertilisation un humans after many sperms reach close to the ovum?
Options
(a) Secretions of acrosome helps one sperm enter ctoplasm of ovum through zona pellucida
(b) All sperms except the one nearest to the ovum lose their tails
(c) Cells of corona radiata trap all the sperms except one
(d) Only two sperms nearest the ovum penetrate zona pellucida
Correct Answer:
Secretions of acrosome helps one sperm enter ctoplasm of ovum through zona pellucida
Explanation:
During fertilisation in humans, many sperms reach close to the ovum. As sperm comes in contact with the zona pellucida layer of the ovum it induces changes in the membrane that blocks the entry of additional sperm. The secretion of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida.
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Topics: Human Reproduction
(101)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Removal of top fertile soil by wind or water
- During ‘gene cloning’ which is called ‘gene taxi’?
- Alcoholic fermentation takes place in the presence of
- In contrast to annelids, the platyhelminthes show
- In sea urchin DNA, which is double stranded,17% of the bases were shown to becytosine.
Topics: Human Reproduction (101)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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