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Q. 204.3( 12 Votes )

In Fig.10.2 mark the positions of the endocrine glands which release the hormones that:

(a) controls the release of sex hormones.

(b) is responsible for the secondary sexual characters in boys.

(c) prevents diabetes.

(d) maintains the correct salt balance in the blood.

Class 8th NCERT - Science Exemplar 10. Reaching the Age of Adolescence

Answer :

a) The pituitary gland is the master gland which controls the secretion of all other endocrine glands so it also controls the secretion of sex hormones.

b) Testes are male reproductive organs which produce male hormone testosterone that regulates the secondary sexual characters in males.

c) The pancreas secretes insulin which regulates blood sugar level. It converts excess sugar into glycogen and stores it in the liver.

d) Adrenal gland secretes aldosterone which regulates the correct salt balance in our body. It balances sodium potassium levels in our body and helps in water retention.

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PREVIOUSDuring adolescence, the body of boys and girls undergoes certain changes. Given below are a few of those changes.(a) Broad shoulders(b) Wider chests(c) The wider region below the waist(d) Development of muscles(e) Development of mammary glands(f) The growth of facial hair(g) Acne and pimples on the face(h) Development of sex organs(i) High-pitched voice(j) The growth of pubic hair.Categorize these changes into those that occur in boys and those that occur in girls and fill in the table given below.NEXTGiven below are certain food items required for proper nourishment of adolescents. Name the nutrients present in the food items and write their functions.

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