Class 12 · Sexual Reproduction in Flowering Plants

Embryo Development Stages in Plants — NEET Biology

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Embryo develops at the micropylar end of the embryo sac where the zygote is situated. Most zygotes divide only after certain amount of endosperm is formed. This is an adaptation to provide assured nutrition to the developing embryo. Though the seeds differ greatly, the early stages of embryo development (embryogeny) are similar in both monocotyledons and dicotyledons. depicts the stages of embryogeny in a dicotyledonous embryo. The zygote gives rise to the proembryo and subsequently to the globular, heart-shaped and mature embryo.

NCERT Biology · Class 12 · Chapter 1 · Paragraph 63
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Why does the zygote divide only after some endosperm is formed?

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