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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
- In a plant organ,which is converted by periderm and in which the stomata are absent
- Decomposers are
- Exponential growth occurs in
- Identify the possible link “A” in the following food chain : Plant insect – frog
- As per the guidelines of the Indian Red Cross society, which of the following persons
Topics: Human Reproduction (101)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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