The end of puberty is marked by a noticeable change. What is it?

State the most prominent change during puberty.

Mention a reason for the hoarseness of voice in boys.

Is it correct to worry about the bodily changes that occur during adolescence?

Mention a secondary sex character that distinguishes a boy and a girl.

Hormones maintain puberty. Give reason.

The sex of a child is determined by a particular factor. What is it?

Is it correct to say that reproductive life of woman ends at menopause?

Name the master gland of body.

A person lacks iodine in this diet. Which disorder he likely to suffer from?

Is the transformation from egg to adults in silkworm controlled by hormones?

Health is not just the absence of diseases, it is much more. Comment.

Name some protective foods.

It is advised to include physical exercise in daily routine. Give reason.

Discuss some harmful effects of taking drugs.

Is looking after physical health more important at adolescent age? Give your opinion.

Name the time period of one’s life when the brain has the greatest capacity for learning.

State the puberty age in human females.

How many pairs in human chromosomes are known as sex chromosomes?

How is the sex of the baby determined?

Write a name of disorder caused by thyroid.

Which hormone maintains the correct salt balance in the blood?

By which term, stoppage of menstruation is described?

In which age, maximum increase in height takes places?

Define menstruation. Explain the menstrual cycle.

Give the location of the following glands in human body.

(a) Pituitary

(b) Thyroid

(c) Adrenals

Iron is needed by our body? Give reason also, name some of the iron-rich foods.

Regular meal is required, it should never be replaced by snacks. Why?

Why do many people get acne and pimples on face?

What will you include in your balanced diet?

State the various ways in which early marriage and motherhood is harmful to the girls.

Explain primary and secondary sexual characteristics in humans with examples.

The sex of the baby depends on the sex chromosome of the sperm. Justify.

What are the functions of thyroxine and adrenaline?

What changes take place during adolescence? Explain.