Chapter 9: Respiration & Circulation - Science Mcqs for Grade 8

1.

The ribs moves upwards and outwards when we

A. inhale

B. exhale

C. digestion

D. defecate

Answer & Solution Discuss in Board

2.

More than half of total blood volume is the

A. red and blood cells

B. plasma

C. platelets

D. all of them

Answer & Solution Discuss in Board

3.

The special organ in mammals, birds and reptiles is

A. lungs

B. air sacs

C. stomata

D. spiracles

Answer & Solution Discuss in Board

4.

Platelets help in blood

A. producing

B. rejuvenating

C. clotting

D. purifying

Answer & Solution Discuss in Board

5.

The circulatory system of human is composed of

A. heart

B. blood

C. blood vessels

D. all of them

Answer & Solution Discuss in Board

6.

Ventricles are chambers of heart which are

A. upper

B. lower

C. middle

D. valves

Answer & Solution Discuss in Board

7.

There is surrounding of rich capillaries around

A. trachea

B. alveoli

C. nostril

D. bronchi

Answer & Solution Discuss in Board

8.

A pale yellow liquid in which blood cells n platelets are suspended is

A. plasma

B. fluid

C. cytoplasm

D. liquid

Answer & Solution Discuss in Board

9.

The smaller sub divisions of arteries in many tiny blood vessels are called

A. plasma

B. veins

C. valves

D. capillaries

Answer & Solution Discuss in Board

10.

The de-oxygenated blood from parts of body is received by

A. right side

B. left side

C. atrium

D. ventricle

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chapter 9: Respiration & Circulation - Science Mcqs for Grade 8

1. The ribs moves upwards and outwards when we

Answer & Solution

2. More than half of total blood volume is the

Answer & Solution

3. The special organ in mammals, birds and reptiles is

Answer & Solution

4. Platelets help in blood

Answer & Solution

5. The circulatory system of human is composed of

Answer & Solution

6. Ventricles are chambers of heart which are

Answer & Solution

7. There is surrounding of rich capillaries around

Answer & Solution

8. A pale yellow liquid in which blood cells n platelets are suspended is

Answer & Solution

9. The smaller sub divisions of arteries in many tiny blood vessels are called

Answer & Solution

10. The de-oxygenated blood from parts of body is received by

Answer & Solution

Read More Section(Science Mcqs)

1.

The ribs moves upwards and outwards when we

2.

More than half of total blood volume is the

3.

The special organ in mammals, birds and reptiles is

4.

Platelets help in blood

5.

The circulatory system of human is composed of

6.

Ventricles are chambers of heart which are

7.

There is surrounding of rich capillaries around

8.

A pale yellow liquid in which blood cells n platelets are suspended is

9.

The smaller sub divisions of arteries in many tiny blood vessels are called

10.

The de-oxygenated blood from parts of body is received by