In angiosperms,the endosperm is formed from:

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(A) In angiosperms,the process of double fertilization involves the fusion of one male gamete with the egg cell to form a diploid zygote $(2n)$.Simult

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Secondary polar nuclei

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(A) In angiosperms,the process of double fertilization involves the fusion of one male gamete with the egg cell to form a diploid zygote $(2n)$.Simultaneously,the second male gamete fuses with the two polar nuclei (or a single diploid secondary nucleus) located in the central cell.This process is known as triple fusion,resulting in the formation of the Primary Endosperm Nucleus $(PEN)$,which is triploid $(3n)$.This $PEN$ subsequently develops into the endosperm,which provides nourishment to the developing embryo.

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