Marchantia is a bryophyte and they are non-vascular plants. Its plant body is thalloid. The first cell of the gametophytic generation is a spore that is surrounded by thick, sculptured walls. They germinate into the gametophyte. In gametophyte male and female gametes will be formed and that will be haploid in nature $\left(\mathrm{n}\right)$. So when the male gamete fuse with the female gamete results in the formation of the zygote $\left(2\mathrm{n}\right)$.