ICSE Class 6 Biology - Circulatory System - Test 1 (Basic)
1. The main function of the circulatory system is:
A. Digestion of food
B. Transport of materials
C. Breathing
2. The organ that pumps blood is:
A. Stomach
B. Heart
C. Lungs
3. Blood mainly helps in transporting:
A. Oxygen
B. Food only
C. Waste only
4. Arteries carry blood:
A. Away from heart
B. Towards heart
C. Only in lungs
5. Veins carry blood:
A. Away from heart
B. Towards heart
C. Only oxygen
6. Capillaries are:
A. Large tubes
B. Thick arteries
C. Tiny blood vessels
7. Red blood cells mainly carry:
A. Oxygen
B. Germs
C. Food particles
8. White blood cells help in:
A. Oxygen transport
B. Fighting infection
C. Digestion
9. Platelets are responsible for:
A. Oxygen transport
B. Immunity
C. Blood clotting
10. The heart is located in the:
A. Abdomen
B. Chest
C. Head
11. Pulse is the:
A. Beat of arteries
B. Breathing rate
C. Digestion speed
12. Blood is a:
A. Solid bone
B. Liquid connective tissue
C. Gas mixture
13. Oxygen is carried by:
A. RBC
B. Platelets
C. Plasma only
14. Plasma is the:
A. Solid part of blood
B. Bone material
C. Liquid part of blood
15. Circulation means:
A. Movement of blood
B. Digestion of food
C. Breathing process
16. The heart works by:
A. Storing blood
B. Pumping blood
C. Making food
17. Arteries have:
A. Thick walls
B. Thin walls
C. No walls
18. Veins contain:
A. No structure
B. Valves
C. Oxygen only
19. Arteries usually carry:
A. Oxygen-rich blood
B. Only waste
C. Air only
20. The circulatory system includes:
A. Lungs only
B. Stomach only
C. Heart, blood and vessels