Final answer:
The singular of ova is ovum, which is a mature female reproductive cell. Oogenesis is the biological process in the ovaries that produces ova, starting from oogonium to primary oocyte, and then to ovum.
Step-by-step explanation:
The singular of ova is ovum, which is Latin for "egg". In the context of human biology, an ovum is a mature female reproductive cell, or gamete, that can participate in the fertilization process to form a new organism when combined with a sperm cell. The term ova refers to more than one such cell.
Oogenesis
Oogenesis is the process by which ova are produced by the ovaries of a female. It begins when a diploid germ cell called an oogonium undergoes mitotic division to form a primary oocyte. This primary oocyte is then capable of undergoing meiosis to eventually become a mature ovum. The entire process of oogenesis takes place over several stages and involves a variety of cell types.
In summary, when discussing the reproductive biology of females, the term ovum is used to describe a single egg cell, whereas ova is the plural form.