Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 20 - Reaching the Age of Adolescence [Latest edition]

Adolescence is the period of life between _______ years of age.

The period at which an organism attains sexual maturity is called _____

During puberty, the region below the waist become wider in _______.

Adam’s apple is the growth of the _____

Many adolescent boys and girls get pimples on the face, due to the secretions of _________ gland.

The sperm is produced by ______.

________ are the chemical substances, secreted by endocrine glands.

Androgen production is regulated by ______

During menstruation, the progesterone level is _____

______ intake needs to be increased to prevent osteoporosis in later life.

________ is secreted by the ovaries of female.

The hormones secreted by the gonads are controlled by ________.

Milk secretion during lactation is controlled by ________ hormone.

The male and the female gamete fuse together and form ______.

The first menstrual flow begins at puberty and it is termed as ______.

_______ usually occurs 14 days after ovulation.

______ includes protein, carbohydrates, fats and vitamins in requisite proportion.

________ helps to prevent thyroid gland related diseases.

Iron deficiency leads to ______.

In women fertilization takes place at ______.

There is a sudden increase in the height of both boys and girls during puberty.

The release of ovum from the uterus is called ovulation.

During pregnancy, the corpus luteum continues to grow and produces large amount of estrogen and progesterone.

Making use of disposable napkins or tampons may increase the chances of infections.

Making use of disposable napkins or tampons may increase the chances of infections.

Using clean toilets for defecation is a good practice.

Match the following.

What is adolescence?

List out the changes which occur during puberty.

What do you mean by secondary sex characteristics?

What is fertilization?

Explain Menarche.

Explain the process of pregnancy.

Explain the importance of cleanliness during the time of menstrual cycle in girls.

How is adolescence differ from childhood?

What are the physical changes that occur in boys and girls during adolescence?

Explain the role of hormones in reproduction.

What is the menstrual cycle?

Explain the nutritional needs of adolescence in brief.

What can you suggest to your classmates to keep himself/herself clean and healthy?

Adolescence is the energistic stage. What health and good habits you want to develop?