Immediately after ovulation, the mammalian egg is covered by a membrane known as ______________.

Chorion

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Zona pellucida

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Corona radiata

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Vitelline membrane

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Solution

The correct option is B Corona radiata
Immediately after ovulation, the layer that forms around the ovum is called corona radiata. It is formed by the granulosa cells of cumulus oophorus. Corona radiata probably Increases the likelihood that the ovum will be picked up in the uterine tube.

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Vitelline membrane is a a)primary egg membrane b)secondary egg membrane c)tertiary egg membrane d)none

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