Chapter 12: Human Transport System - Science Mcqs for Grade 7 - Set 1

1)   The heart is also called

a. muscular pump
b. pumping device
c. pumping machine
d. pumping muscle
Answer  Explanation 

ANSWER: muscular pump

Explanation:
No explanation is available for this question!


2)   The walls of left ventricle are thicker than the walls of right ventricle because

a. it has to pump blood to the whole body
b. it has to pump the blood to lungs
c. blood reaches this ventricle in huge amount
d. blood reaches this ventricle with extra pressure
Answer  Explanation 

ANSWER: it has to pump blood to the whole body

Explanation:
No explanation is available for this question!


3)   The vessel which takes the blood from heart to lungs, is known as

a. renal artery
b. pulmonary artery
c. renal vein
d. pulmonary vein
Answer  Explanation 

ANSWER: pulmonary artery

Explanation:
No explanation is available for this question!


4)   Tiny vessels link up and form a

a. artery
b. vein
c. capillary
d. nerve
Answer  Explanation 

ANSWER: vein

Explanation:
No explanation is available for this question!


5)   The clot of blood formed in the blood vessel is known as

a. hemophilia
b. anemia
c. thrombosis
d. varicose vein
Answer  Explanation 

ANSWER: thrombosis

Explanation:
No explanation is available for this question!


6)   'Oxygen' is taken from

a. cells to lungs
b. heart to lungs
c. lungs to cells
d. cells to heart
Answer  Explanation 

ANSWER: lungs to cells

Explanation:
No explanation is available for this question!


7)   The cells generally known "the army of human body" are

a. white blood cells
b. platelets
c. red blood cells
d. antigens
Answer  Explanation 

ANSWER: white blood cells

Explanation:
No explanation is available for this question!


8)   The artery that carries deoxygenated blood is

a. renal artery
b. hepatic artery
c. mesenteric artery
d. pulmonary artery
Answer  Explanation 

ANSWER: pulmonary artery

Explanation:
No explanation is available for this question!


9)   The elasticity of red blood cells helps them to

a. pass through capillaries easily
b. absorb oxygen easily
c. release carbon dioxide easily
d. move in the veins easily
Answer  Explanation 

ANSWER: pass through capillaries easily

Explanation:
No explanation is available for this question!


10)   The beating of pulse is due to

a. energy
b. flow of blood
c. flow of water
d. oxygen
Answer  Explanation 

ANSWER: flow of blood

Explanation:
No explanation is available for this question!