<Ul> <Li> antheridium (male) </Li> <Li> archegonium (female) </Li> </Ul> <Li> antheridium (male) </Li> <Li> archegonium (female) </Li> <P> In angiosperms, the male gametes (always two) are produced inside the pollen tube (in 70% of the species) or inside the pollen grain (in 30% of the species) through the division of a generative cell into two sperm nuclei . Depending on the species, this can occur while the pollen forms in the anther (pollen tricellular) or after pollination and growth of the pollen tube (pollen bicellular in the anther and in the stigma). The female gamete is produced inside the embryo sac of the ovule . </P>

In which organ does gametogenesis occur in a male mouse