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Why most of the zygotes in angiosperms d...

Why most of the zygotes in angiosperms divide only after certain amount of endosperm is formed?

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The zygote needs nourishment during its development . As the mature, fertilised embryo sac offers very little nourishment to the zygote , the PEC divides and generates the endosperm tissue which nourishes the zygote . Hence, the zygote always divides after division of PEC
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TRUEMAN BIOLOGY-REPRODUCTION-SECTION-B
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  18. Name all the haploid cells present in an unfertilized mature embryo-sa...

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