II. Write Yes if the statement is comect and No if it is incorrect.
1. An average man can have approximately 5,000,000 sperm cells in a single drop
of his semen.
2. Penis is the gland that produce the sperm cells and the male sex hornones
called testosterone.
3. Vas deferens is a narrow, coiled tube that stores sperm cells.
4. The egg cell is only one-tenth of a centimetre.
5. The uterus is a hollow muscular organ located at the lower abdomen.
6. Boys start to experience puberty earlier.
7. Puberty usually occurs during adolescence.
8. Period of growth differs among individuals.
9. Physical changes are also called secondary sex characteristics.
10. Adulthood begins at about age 30.​