The stages of Riccia’s reproductive system are:
(i) Gamete formation: Male reproductive organs of Riccia are called antheridia and female reproductive organs are called archegonia. Each reproductive mother cell of the antheridium develops into a bi-flagellated spermatozoon. The reproductive mother cell of the archegonium forms the ovule.
(ii) Fertilization: During sexual reproduction, their sperm swim in water and come near the egg. It then fuses with the egg in the presence of water. The union of sperm and egg is called fertilization. Fertilization results in the formation of a zygote.
(iii) Germination: The zygote produced by fertilization germinates to form a simple and spherical sporophyte.
