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Question

In double fertilisation, one male gamete fuses with the __(i)__ to form zygote and the other male gamete fuses with __(iii)__ to form primary endosperm nucleus.

A
synergids (n), antipodals (n)
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B
egg (n), antipodals
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C
egg (n), secondary nucleus (2n)
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D
egg (n), synergids (n)
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Solution

The correct option is B egg (n), secondary nucleus (2n)
Double fertilisation is a process unique to flowering plants in which two male gamete nuclei, which have travelled down in the pollen tube separately fuse with different female nuclei in the embryo sac/The first male nucleus fuses with egg cell to form the zygote and the second male nucleus fuses with the two polar nuclei or secondary nucleus to form a triploid nucleus that develops into the endosperm.
So the correct option is C.

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