which of these is a male gametophyte
The pollen grain is the male gametophyte. When pollination occurs and the pollen grain makes contact with the stigma (the apex of the pistil), the tube cell elongates its cytoplasm, forming the pollen tube that grows towards the ovary.The generative cell divides to form two sperm nuclei (male gametes), which then migrate through the pollen tube.3. A typical seed is composed of the embryo, endosperm and shell. Within seeds of angiosperms, there are one or two cotyledons (seed leaves, one in monocots, two in dicots). The endosperm is the tissue within the seed that has the function of nourishing the embryo.