Match the columns: Column A Column B 1. Adolescence (a) Puberty 2. Secondary sexual characters (b) Hormones 3. Adam's apple (c) Increase in height and weight 4. Endocrine glands (d) Enlargement of hips 5. Growth (e) Adolescence period 6. Pubertal changes in females (f) Broadening of shoulders 7. Teenagers (g) Reproductive maturity 8. Pubertal changes in males (h) Enlarged voice box

1 - (g) The period of transition from childhood to adulthood is called adolescence. It is characterized by emotional, physiological, and psychological changes. The physiological changes include an increase in height, reproductive maturity, change in voice. These changes are controlled by the hormones, for example, the growth hormone is responsible for the increase in height. 2 - (a) The period of adolescence during which an individual attains sexual maturity is called puberty. It is characterized by secondary sexual characteristics such as the development of mammary glands, growth of pubic hair, widening of hips in females, etc. 3 - (h) During puberty in males, the larynx or voice box enlarges and forms Adam's apple. It is a secondary sexual characteristic that is controlled by the testosterone hormone. 4 - (b) Endocrine glands are ductless glands that secrete specific proteins directly into the bloodstream. These specific proteins are called hormones. An example of the endocrine gland with its hormone is as follows: The thyroid gland secretes thyroxine. 5 - (c) The permanent increase in the size or weight of an organism is called growth. During the period of adolescence, there is an increase in the height and weight of an individual. The height of a person is controlled by the growth hormone secreted by the pituitary (master) gland. 6 - (d) The period of adolescence during which an individual attains sexual maturity is called puberty. The changes that occur during this period are called secondary sexual characteristics. The enlargement of hips, development of mammary glands, growth of pubic hair are secondary sexual characteristics in females which are controlled by the estrogen hormone. 7 - (e) The individuals that are in the period of adolescence are called teenagers. Teenagers should take bath every day as there is an increased secretion of sweat and sebum. The accumulation of which can lead to acne and pimples. 8 - (h) The period of adolescence during which an individual attains sexual maturity is called puberty. The changes that occur during this period are called secondary sexual characteristics. Development of Adam's apple, growth of facial and pubic hair, broadening of shoulders and chest are secondary sexual characteristics in males which are controlled by the testosterone hormone. Column A Column B 1. Adolescence (g) Reproductive maturity 2. Secondary sexual characters (a) Puberty 3. Adam's apple (h) Enlarged voice box 4. Endocrine glands (b) Hormones 5. Growth (c) Increase in height and weight 6. Pubertal changes in females (d) Enlargement of hips 7. Teenagers (e) Adolescence period 8. Pubertal changes in males (f) Broadening of shoulders

E M B I B E

New Trends in ICSE BIOLOGY 8>Human Body - Endocrine, Circulatory and Nervous Systems>Chapter 5 - Adolescence and Accompanying Changes>Exercises

Mrs. Chanda Roy and Pradeep Singh Solutions for Exercise 1: Exercises

Author:Mrs. Chanda Roy & Pradeep Singh

Mrs. Chanda Roy Biology Solutions for Exercise - Mrs. Chanda Roy and Pradeep Singh Solutions for Exercise 1: Exercises

Attempt the free practice questions from Exercise 1: Exercises with hints and solutions to strengthen your understanding. New Trends in ICSE BIOLOGY 8 solutions are prepared by Experienced Embibe Experts.

Questions from Mrs. Chanda Roy and Pradeep Singh Solutions for Exercise 1: Exercises with Hints & Solutions

MEDIUM

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 1

Choose the odd one out:

EASY

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 2

Choose the odd one out:

EASY

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 3

Choose the odd one from each of the following:

EASY

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 4

Choose the odd one from each of the following:

EASY

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 3

The most important change which marks puberty is:

MEDIUM

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 4

Adolescents should be careful about what they eat, because:

EASY

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 5

Reproductive age in women starts when their:

EASY

8th ICSE

IMPORTANT

New Trends in ICSE BIOLOGY 8>Chapter 5 - Adolescence and Accompanying Changes>Exercises>Q 1

Match the columns:

Column A	Column B
1. Adolescence	(a) Puberty
2. Secondary sexual characters	(b) Hormones
3. Adam's apple	(c) Increase in height and weight
4. Endocrine glands	(d) Enlargement of hips
5. Growth	(e) Adolescence period
6. Pubertal changes in females	(f) Broadening of shoulders
7. Teenagers	(g) Reproductive maturity
8. Pubertal changes in males	(h) Enlarged voice box

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