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प्रश्न
How is polyspermy prevented in humans?
उत्तर
When a sperm comes in contact with the zona pellucida layer of the ovum, it induces changes in the membrane of the ovum to block the entry of additional sperms. This, thus, prevents the polyspermy and ensures that only one sperm can fertilise an ovum.
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संबंधित प्रश्न
Fertilisation is __________ in humans.
Fertilisation takes place in __________.
Define Placentation
Answer the following question.
Name the embryonic stage that gets implanted in human females. Explain the process of implantation.
Blastopore is ______.
Amount of yolk and its distribution are changed in the egg. Which one is affected?
In human female the blastocyst ______.
The sperms undergo physiological maturation, acquiring increased motility and fertilising capacity in ______.
In sexually reproducing animals, the union of male and female gamete forms a cell which is called ______
How does zona pellucida of ovum help in preventing polyspermy?
