Question

In angiosperms,zygote is diploid while primary endosperm cell is triploid. explain

Answer 1

In angiosperms it is Double fertilization which leads to such condition

When male gametes are released from pollen tube through synergids,one of the male gamete gets fused with egg cell(n) to form zygote,while other male gamete fuses with central egg cell(2n) which is diploid in nature to form endosperm cell(3n).