Growth of female secondary sex organs is stimulated at puberty by ________while growth of male secondary sex organs is stimulated by __________

Answer

To answer the question regarding the hormones that stimulate the growth of secondary sex organs in females and males during puberty, we can break it down into two parts:

1. **Growth of Female Secondary Sex Organs**:
- At puberty, the growth of female secondary sex organs is primarily stimulated by **estrogens**.
- Estrogens are hormones that are produced mainly by the ovaries and play a crucial role in the development of female secondary sexual characteristics such as breast development, widening of hips, and the regulation of the menstrual cycle.

2. **Growth of Male Secondary Sex Organs**:
- The growth of male secondary sex organs is stimulated by **testosterone**.
- Testosterone is produced mainly by the testes and is responsible for the development of male secondary sexual characteristics such as increased muscle mass, deepening of the voice, and growth of facial and body hair.

Thus, the complete answer to the question is:
- Growth of female secondary sex organs is stimulated at puberty by **estrogens**, while growth of male secondary sex organs is stimulated by **testosterone**.