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Question

Label the following:

A
A - degenerating antipodal cells, B - zygote, C - PEC, D - PEN, E - degenerating synergids
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B
A - degenerating synergids, B - endosperm, C - zygote, D - nucleus, E - degenerating antipodal cells
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C
A - degenerating synergids, B - zygote, C - primary endosperm cell, D - primary endosperm nucleus, E - degenerating antipodal cells
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D
A - degenerating antipodal cells, B - egg, C - central cell, D - polar nuclei, E - degenerating synergids
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Solution

The correct option is C A - degenerating synergids, B - zygote, C - primary endosperm cell, D - primary endosperm nucleus, E - degenerating antipodal cells

This is the completely labelled diagram of a fertilized embryo sac.

At the micropylar end, due to the fusion of egg cell with male gamete, zygote is formed.
The synergids present at the micropylar end start to degenerate after fertilisation.

The two polar nuclei present in the central cell fuse with another male gamete to form primary endosperm nucleus (PEN).
After fertilisation, the central cell with PEN is called primary endosperm cell (PEC).

The antipodal cells at chalazal end start to degenerate after fertilisation.

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