Circulatory System — Homi Bhabha Class 6 Biology MCQs with Solutions
Free Homi Bhabha Class 6 Biology Circulatory System MCQs with step-by-step solutions (10 questions). Part of Human Body Systems. Practise online on Prepizo — no login needed.
▶ Practise Circulatory System online (free)
Questions with solutions
Q1 — Circulatory System · easy · theory
Which organ pumps blood to all parts of the body?
A. The lungs
B. The heart ✓ Correct
C. The stomach
D. The brain
Solution: The heart is a muscular pump that pushes blood around the whole body.
Q2 — Circulatory System · easy · theory
The red liquid that flows in our body, carrying food and oxygen, is:
A. urine
B. blood ✓ Correct
C. water
D. saliva
Solution: Blood carries oxygen and digested food to all parts of the body.
Q3 — Circulatory System · easy · theory
Blood flows all over the body inside tubes called:
A. food pipes
B. nerves
C. blood vessels ✓ Correct
D. bones
Solution: Blood vessels are the tubes that carry blood throughout the body.
Q4 — Circulatory System · easy · theory
Blood looks red because of the tiny:
A. red blood cells ✓ Correct
B. bones
C. air sacs
D. water drops
Solution: Red blood cells give blood its red colour and carry oxygen.
Q5 — Circulatory System · medium · theory
Blood vessels that carry blood AWAY from the heart are called:
A. windpipes
B. veins
C. arteries ✓ Correct
D. nerves
Solution: Arteries carry blood away from the heart to the rest of the body.
Q6 — Circulatory System · medium · theory
Blood vessels that carry blood BACK to the heart are called:
A. bones
B. veins ✓ Correct
C. arteries
D. food pipes
Solution: Veins bring blood back to the heart.
Q7 — Circulatory System · medium · theory
Each time the heart pumps, we can feel a throb in our wrist called the:
A. cramp
B. pulse ✓ Correct
C. sneeze
D. hiccup
Solution: The pulse is the beat we feel as blood is pushed through the vessels.
Q8 — Circulatory System · medium · theory
The white blood cells in our blood mainly help us by:
A. making bones
B. digesting food
C. fighting germs and diseases ✓ Correct
D. carrying oxygen
Solution: White blood cells protect the body by fighting the germs that cause disease.
Q9 — Circulatory System · hard · theory
Blood carries oxygen and digested food to the body cells and carries away the waste gas:
A. nitrogen
B. carbon dioxide (CO₂) ✓ Correct
C. hydrogen
D. oxygen (O₂)
Solution: Body cells make carbon dioxide (CO₂) as waste, and blood carries it away.
Q10 — Circulatory System · hard · numerical
A girl’s heart beats 80 times in one minute. How many times will it beat in 2 minutes?
A. 160 ✓ Correct
B. 100
C. 82
D. 800
Solution: 80 beats in each minute × 2 minutes = 160 beats.