In angiosperms,the endosperm is .....

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(B) In angiosperms,the process of double fertilization involves the fusion of one male gamete with two polar nuclei to form the primary endosperm nucl

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Triploid

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(B) In angiosperms,the process of double fertilization involves the fusion of one male gamete with two polar nuclei to form the primary endosperm nucleus $(PEN)$.Since the male gamete is haploid $(n)$ and the two polar nuclei are also haploid $(n + n)$,their fusion results in a triploid $(3n)$ structure.Therefore,the endosperm in angiosperms is triploid $(3n)$.

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