CBSE Class 8 Science Chapter 7 Reaching The Age Of Adolescence VSAQs

CBSE Class 8 Chapter 7 Reaching The Age Of Adolescence Very Short Answer Type Questions

Question 1. Adolescence is the period from 13-19 years of age. Is there any other term for this period?
Answer: Yes, the other term for adolescence is teenage.

Question 2. Do all the parts of the body grow at the same rate? State yes or no.
Answer: No, all parts of the body do not grow at the same rate.

Question 3. What is the common name of the bulge (or projection) at the front of the throat in grown-up boys?
Answer: Adam’s apple.

Question 4. Some characters distinguish a boy from a girl. What are they called?
Answer: Secondary sexual characteristics distinguish a boy from a girl

Question 5. Name the hormone that is released by the testes at the onset of puberty.
Answer: Testosterone is the male hormone that is released from the testes at the onset of puberty.

Question 6. Name the female hormone produced by the ovaries that helps in the development of mammary glands.
Answer: Oestrogen is the female hormone produced by the ovaries that helps in the development of breasts/mammary glands.

Question 7. State the function of the male sex hormone testosterone.
Answer: Testosterone is involved in the development of the reproductive organs and controls secondary sexual characteristics.

Question 8. Give a suitable word for each of the following statements.

1. The site that responds to a hormone.
2. Name of a gland which transports secretions through ducts.
3. Chemicals that control changes at the adolescent stage.
4. It marks the beginning of the reproductive period.

Answer:

1. Target site
2. Sweat glands
3. Hormones
4. Puberty

Question 9. Out of the two sexes of humans, which one has a longer reproductive phase of life?
Answer: Men have a longer reproductive phase oflife than women.

Question 10. What is the name of the process in which the thickened uterus lining along with its blood vessels is removed from the body of a woman through vaginal bleeding.
Answer: Menstruation cycle.

Question 11. Which comes earlier in the life of a woman, menarche or menopause?
Answer: The reproductive life of a woman starts at menarche and ends at menopause. Thus, menarche comes earlier.

Question 12. What is menstruation? Explain.
Answer: Menstruation is the monthly reproductive cycle that occurs in women once in about 28-30 days.

It is the release of unfertilised eggs along with blood. If the egg released from the ovary does not get fertilised, the released egg and the thickened lining of the uterus, along with its blood, are released from the body.