Question

In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?

Answer 1

In angiosperms, one sperm cell fuses with the egg cell to form the zygote, while the other fuses with the two polar nuclei form the endosperm which nourishes the developing embryo.