In angiosperms when the pollen tube enters one of the synergids of embryos sac, two male gametes are

Question

In angiosperms when the pollen tube enters one of the synergids of embryos sac, two male gametes are released into its cytoplasm. One of the male gamete fuses with the egg cell to produce zygote which develops into A whereas the other male gamete fuses with the polar nuclei to develop into B. C is the final product of sexual reproduction which is developed after fertilisation and are formed inside fruits.\ Which of the following is a diploid structure?\

Professor PC Thomas Classes · Answer

(d) : Endosperm (B) is triploid structure as one haploid male gamete fuses with two polar nuclei.