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Raman is learning the post-fertilization changes of an angiosperm embryo sac with the help of slides. He identied the egg nucleus and polar nuclei with the help of his teacher.

(a) Name the other nuclei present in the embryo sac.

(b) Help Raman by giving the changes that takes place with egg nucleus and polar nuclei after fertilization.

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(a) Antipodals and synergids

(b) Egg nucleus + Sperm -> Sygote (2n)

Polar nuclei + Sperm -> PEN (3n) primary endosperm nucleus.

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