Which of the following are changes seen in boys during adolescence?

Q. During adolescence, the body of boys and girls undergoes certain changes. Given below are a few of those changes. Find which changes occur in boys:

Q.

Question 19
During adolescence, the body of boys and girls undergo certain changes. Given below are a few of those changes.

(a) Broad shoulders
(b) Wider chests
(c) Wider region below waist
(d) Development of muscles
(e) Development of mammary glands
(f) Growth of facial hair
(g) Acne and pimples on face
(h) Development of sex organs
(i) High-pitched voice
(j) 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.

Q.

(a) State two secondary sexual characteristics in mature boys and two in mature girls.

(b) Which of the following are secondary sexual characteristics ?

Ovaries, Moustache, Penis, Broad hips, Vagina, Beard, Breasts, Adam's Apple, Wide shoulder, Uterus, Tastes, Deeper voice.

Q.

1. MALE- Cracking of voice, appearance of beard, secretion of testosterone, growth of hair in armpit. FEMALE- onset of monthly periods, enlargement of breasts, appearance of hair in armpits, widening in hip region.

2. MALE- growth of hair on scalp, excess secretion of digestive enzymes, increase in circulation in skin, enlargement of voice box. FEMALE- More secretion of keratin for hair growth, lightening of skin, more secretion of salivary amylase, darkening of pupil in eyes.

Which of the above are true in regards to sexual maturation?

Q. During adolescence, several changes occur in the human body. Mark one change from the following associated with sexual maturation in boys :
(a) loss of milk teeth
(b) increase in height
(c) cracking of voice
(d) weight gain