In biology, what is the term for the sex glands, either testes or ovaries, that are found in an animal's reproductive organs?

The term for the sex glands in an animal's reproductive organs is "gonads." Gonads are crucial for reproduction as they produce the gametes—sperm in males (produced by the testes) and eggs in females (produced by the ovaries). They also play a significant role in hormone production, influencing sexual development and reproduction.

Oocytes refer specifically to the female gametes or egg cells and do not encompass the broader category of sex glands. Gametes are the reproductive cells produced by the gonads, while androgens are a group of hormones, such as testosterone, produced by the gonads that influence male characteristics and reproductive functions. Therefore, gonads is the most accurate term to describe the sex glands involved in reproduction.