CBSE Class 8 Science Worksheet
Reaching The Age of Adolescence
1.
Fill in the Blank: The period of life, when the body undergoes changes, leading to reproductive maturity, is called _____________.
2.
State True or False: Endocrine glands are also called ductless glands.
A)
1
B)
0
3.
Choose the correct option: After puberty, boys and girls become capable of ____________.
A)
marriage
B)
reproduction
C)
respiration
D)
digestion
4.
Fill in the Blank: In females, the uterine wall thickens to receive the ______________.
6.
Choose the correct option: Male hormone is _________.
A)
oestrogen
B)
testosterone
C)
progesterone
D)
All of the above
7.
State True or False: Chips can be used as regular meal.
A)
1
B)
0
8.
Which of the following mineral builds blood?
A)
Copper
B)
Aluminium
C)
Iron
D)
Phosphorus
9.
State True or False: Voice becomes deep in adolescent boys.
A)
1
B)
0
10.
State True or False: Goitre is the disease of pancreas.
A)
1
B)
0
11.
State True or False: Girls and boys grow on same rate.
A)
1
B)
0
12.
Fill in the Blank: The first menstrual flow begins at puberty and is known as ______________.
13.
Which element in water must be available for the metamorphosis of tadpoles?
A)
Chlorine
B)
Iodine
C)
Sodium
D)
Potassium
15.
Choose the correct option: AIDS can spread from an infected person to another person through ___________.
A)
blood transfusion
B)
sharing food
C)
sharing comb
D)
None of these
16.
Fill in the Blank: The development of a caterpillar to an adult butterfly is called __________________.
17.
Fill in the Blank: The sex hormones are under the control of hormones from the ___________ gland.
18.
State True or False: In case of pregnancy, ovulation and menstruation stop in a woman.
A)
1
B)
0
19.
Which of the following hormone maintains the correct balance of salts in the blood?
A)
estrogen
B)
insulin
C)
thyroxine
D)
adrenalin
20.
Why adolescents experience acne and pimples?
CBSE Class 8 Science Worksheet
Reaching The Age of Adolescence
Answers
1.
adolescence
2.
Option A
3.
Option B
4.
fertilized eggs
5.
They are the ductless glands which secrete hormones directly into blood.
6.
Option B
7.
Option B
8.
Option C
9.
Option A
10.
Option B
11.
Option B
12.
menarche
13.
Option B
14.
Acquired immune deficiency syndrome
15.
Option A
16.
metamorphosis
17.
pituitary
18.
Option A
19.
Option D
20.
Because of increased activity of sebaceous (oil) glands in the skin.
