Science

Reaching the Age of Adolescence

Question:

What are sex hormones? Why are they named so? State their function.

Answer:

Sex hormones are chemical substances produced by sex organs. For example, testosterone is the male sex hormone produced by the testis, and oestrogen is the female sex hormone produced by the ovary. These hormones affect the sexual features of an organism. Hence, they are known as sex hormones. Functions of sex hormones: Testosterone: This hormone brings about secondary sex characters in boys such as the growth of a beard, the voice becoming hoarse, development of reproductive organs, etc. Oestrogen: This hormone is responsible for the development of secondary sexual characters in females such as the enlargement of breasts, development of female reproductive organs, etc.
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Reaching the Age of Adolescence

Q 1.

Define adolescence.

Q 2.

What is menstruation? Explain.

Q 3.

What is the term used for secretions of endocrine glands responsible for changes taking place in the body?

Q 4.

List changes in the body that take place at puberty.

Q 5.

Write notes on Secondary sexual characters.

Q 6.

Write notes on Adam's apple.

Q 7.

What are sex hormones? Why are they named so? State their function.

Q 8.

Write notes on Sex determination in the unborn baby.