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Question

Select the incorrect statement with respect to human beings.

A
Mitochondria are present in the middle piece of sperm
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B
Spermatogenesis starts at puberty whereas oogenesis begins in foetal life.
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C
Cytoplasm is more abundant in egg than in sperm.
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D
Ovum is motile and sperm is non-motile.
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Solution

The correct option is D Ovum is motile and sperm is non-motile.
The female gamete (ovum) in human beings is non-motile whereas the male gamete (sperm) is motile. The middle piece of sperm has enormous mitochondria that provide energy for the motility of the sperm.

The cytoplasm is more abundant in the egg when compared to the sperm.

Spermatogenesis is the process of formation of sperms and it begins at puberty in men and continues till old age.
Oogenesis is the process of formation of ovum and it begins in females during foetal life.

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