Explain the process of fertilization in human.

Solution

Fertilization is the fusion of male and female haploid gametes to form a diploid zygote.

The process of fertlization involves the steps:

1. A sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane which block the entry of more than one sperm.
2. The acrosomal secretions aid in the entry of sperm into the cytoplasm of the ovum through the
zona pellucida and the plasma membrane.
3. The seconday oocyte completes its meiotic division on the entry of sperm.
4. Meiosis of secondary oocyte is unequal and leads to the formation of a smaller second polar body and a larger ovum.
5.Finally the haploid nucleus of the sperms fuses with haploid ovum to form a diploid zygote.

Some More Questions From Human Reproduction Chapter

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Human Reproduction

Explain the process of fertilization in human.

Some More Questions From Human Reproduction Chapter

Primary spermatocyte produces 4 spermatozoa, but primary oocyte produces :

Ovulation takes place :

Which of the following shows hermaphroditism and self fertilization ?

The chromosone in primary spermatocyte are :

The male reproductive system is located in the body, in the :

Sertoli cells provide :

The middle piece of human sperm contains :

Seminiferous tubules open into vasa efferentia through :

Polar bodies are produced during the process :

In 28 days woman's menstrual cycle, ovulation occurs on :

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