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Question

Amongst angiosperms, double fertilization/ triple fusion is absent in ________.

A
Orchidaceae
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B
Trapaceae, orchidaceae and podostemonaceae
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C
Orchidaceae and podostemonaceae
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D
There is no exception
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Solution

The correct option is A Orchidaceae
The embryo sac of Vanilla imperialis (Orchidaceae) is six-nucleate, and double fertilization and formation of endosperm are not observed.
So the correct option is 'Orchidaceae'.

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