I think it's aeration but I'm not 100% sure though.
The answer is definetly A
Occurrence: Spermatogenesis occurs inside the seminiferous tubules of a testis whereas oogenesis occurs inside the ovary. The product form in spermatogenesis is sperm which is flagellated i.e. motile and the product form in an Oogonium is ovum which is non-motile.
Answer:
The science of biology explains the origin and persistence of life, and studies the changes in living things
Explanation:
Answer:
D - Flowering plants and ferns have a more recent common ancestor than they do with spike mosses
Explanation:
