The embryo sac of Polygonum is ...................

Bisporic and 4 nucleated

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Tetrasporic and 16 nucleated

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Monosporic and 4 nucleated

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Monosporic and 8 nucleated

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Solution

The correct option is C Monosporic and 8 nucleated
Polygonum type of embryo sac: This type of embryo sac develops from the chalazal megaspore. Its nucleus divides thrice to form eight nuclei. This type is generally referred to as normal type of embryo sac. It is also called Polygonum type. It was first time described in Polygonum divaricatum by Strasburger.
So, the correct answer is 'Monosporic and 8 nucleated'

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Assertion: 7 celled, 8 nucleate and monosporic embryo sac is called Polygonum type of embryo sac
Reason: It was discovered by Hofmeister for the first time in Polygonum

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