Flora is plant life; fauna refers to animals. Fauna derives from the name of a Roman goddess, but the handiest way to remember flora and fauna is that flora sounds like flowers, which are part of the plant world, and fauna sounds like fawn, and fawns are part of the animal kingdom. Definitions of fauna.
The testes and ovaries, or gonads, are perhaps the most familiar endocrine glands. In males, testes produce sperm and secrete the male sex hormone testosterone; in females, ovaries produce eggs and the female hormone estrogen.It is these hormones that determine secondary sex characteristics like muscle mass and facial hair. They also help to orchestrate sperm production, menstruation and pregnancy.he testes and ovaries, or gonads, are perhaps the most familiar endocrine glands. In males, testes produce sperm and secrete the male sex hormone testosterone; in females, ovaries produce eggs and the female hormone estrogen.
Gamete Fusion. The third way that sexual reproduction provides greater genetic diversity than asexual reproduction is through the process of fertilization, or gamete fusion. Gametes contain only half the amount of DNA of a normal cell, so two gametes must fuse to form a new cell that will develop into a new organism.he third way that sexual reproduction provides greater genetic diversity than asexual reproduction is through the process of fertilization, or gamete fusion.