Question

During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys.

• A. loss of milk teeth
• B. increase in height
• C. cracking voice
• D. weight gain

Answer 1

The correct option is C

cracking voice

The correct option is C.

Explanation of correct option:

1. Growth spurts have been seen in both males and females during adolescence.
2. Weight increase occurs as a result of fat deposition in some body areas of girls.
3. Bone maturation occurs in both males and females.
4. During adolescence, around half of an ideal adult's body weight is gained.
5. The testosterone hormone causes male voices to crack.

Explanation of the incorrect option:

Option A:

1. Milk teeth are also known as deciduous teeth.
2. These are temporary teeth.
3. The milk teeth are replaced by new permanent teeth. Hence humans are diphyodonts.

Option B:

1. Adolescence is the time between 13 to 19 years.
2. It is also called teenage and several changes occur at this time in boys and girls.
3. The height also increases suddenly in girls than boys.
4. The bones are increases and individuals become tall.

Option D:

1. Weight is another change at the time of adolescence.
2. Muscles are deposited in the body and help in their development.
3. The weight gain is also necessary for an increase in height.
4. It is more in girls than boys.

Final answer: During adolescence, several changes occur in the human body. One change associated with sexual maturation in boys is the cracking voice.