MEDIUM
8th CBSE
IMPORTANT
Earn 100

State two secondary sexual characteristics in mature boys and two in mature girls.

Important Questions on Reaching the Age of Adolescence

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 60
Which of the following are secondary sexual characteristics?
Ovaries, Moustache, Penis, Broad hips, Vagina, Beard, Breasts, Adam's Apple, Wide shoulders, Uterus, Testes, Deeper voice.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 61
Which of the following are endocrine glands?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 62
What name is given to the onset of menstruation in human females (or girls)? At what age does this occur? 
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 62
What name is given to the permanent stoppage of menstruation in women? At what age does this occur?
HARD
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 63
Who is responsible for the sex of the unborn child: father or mother? Why?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 64

What will be the sex of the child born if X chromosome carrying sperm fuses with an egg cell carrying X chromosome?

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 64

What will be the sex of the child born if Y chromosome carrying sperm fertilises an ovum containing X chromosome?

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Short Answer Type Questions>Q 65
What are hormones? Where are hormones made in the human body?