Hormones that act directly on the gonads are called

A) pheromones.
B) allomones.
C) gonadotropins.
D) lipotropins.

Gonadotropins

Hormones produced by the anterior pituitary gland that stimulate the activity of the gonads (ovaries and testes).

Lipotropins

Hormones produced by the anterior pituitary gland, involved in fat metabolism and the stimulation of lipolysis.

Pheromones

Chemical substances produced and released into the environment by animals, including humans, that affect the behavior or physiology of others of its species.