Question

Embryo sac is formed by-​

Answer 1

• An embryo sac is said to form when the haploid megaspore nucleus divides. It possesses two haploid nuclei and six haploid cells which do not have cell walls.

• In some cases, the haploid nuclei combine forming a single cell (endosperm motor cell). At the event of fertilisation, one male nucleus and egg nucleus combine for the formation of zygote leading to the development of the embryo. Endosperm nucleus forms with the fusion of the primary endosperm nucleus and second male nucleus.

Answer 2

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