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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.
Related Questions: - In angiosperms, microsporogenesis and megasporogenesis :
- Which of the following surrounds the vacuole?
- The junction,which helps to stop substances from leaking across a tissue is
- When a lysosome fuses with a phagosome it results in the formation of
- What do you mean by closed vascular bundle
Topics: Human Reproduction
(101)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In angiosperms, microsporogenesis and megasporogenesis :
- Which of the following surrounds the vacuole?
- The junction,which helps to stop substances from leaking across a tissue is
- When a lysosome fuses with a phagosome it results in the formation of
- What do you mean by closed vascular bundle
Topics: Human Reproduction (101)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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