Fertilizins are the substances secreted from

Mature egg

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Sperms

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Immature egg

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Polar body

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Solution

The correct option is B Mature egg
Fertilizins are the substances secreted from the mature egg. During fertilization. The fertilizin of an egg interacts with the anti fertilizin of sperm of the same species. This attraction between fertilizin and antifertilizin makes the sperms stick to the egg surface. The sperm plasma then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and fertilization takes place.

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