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Q.

In a mature 7-celled or 8-nucleate embryo sac, the ploidy level of the secondary nucleus is the same as that of the :

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a

Synergids

b

Antipodals

c

Nucellus 

d

Polar nuclei

answer is C.

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Detailed Solution

The secondary nucleus is formed by fusion of the 2 polar nuclei. Therefore, the secondary nucleus is diploid. The ploidy of the secondary nucleus is same as that of nucellus as it is also a diploid structure.

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