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

1)   A pacemaker is a group of cells in one of the chamber of heart. The chamber is

a. right ventricle
b. left ventricle
c. right atrium
d. left atrium
Answer  Explanation 

ANSWER: right atrium

Explanation:
No explanation is available for this question!


2)   Atria and ventricles are connected by a

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

ANSWER: valve

Explanation:
No explanation is available for this question!


3)   Small cells that make a net on a wound are

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

ANSWER: platelets

Explanation:
No explanation is available for this question!


4)   The medium for blood cells to flow is

a. tissue fluid
b. plasma
c. hemoglobin
d. fibrinogen
Answer  Explanation 

ANSWER: plasma

Explanation:
No explanation is available for this question!


5)   The beat inside the chest (under left rib) is due to

a. huge blood vessels
b. heart
c. lungs
d. bones
Answer  Explanation 

ANSWER: heart

Explanation:
No explanation is available for this question!


6)   When ventricles contract, atria

a. relaxes
b. also contracts
c. squeezes
d. blocks
Answer  Explanation 

ANSWER: relaxes

Explanation:
No explanation is available for this question!


7)   The heart locates a bit on the left side of the chest because

a. it is on the left side
b. the atria are tilted towards the left
c. the ventricles are tilted towards the left
d. the atria are tilted towards the right
Answer  Explanation 

ANSWER: the ventricles are tilted towards the left

Explanation:
No explanation is available for this question!


8)   If a person's wound does not cure or clot is not formed, he is suffering from

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

ANSWER: hemophilia

Explanation:
No explanation is available for this question!


9)   The number of chambers in a human heart is

a. three
b. four
c. five
d. six
Answer  Explanation 

ANSWER: four

Explanation:
No explanation is available for this question!


10)   The disease in which deficiency of insulin occurs is known as

a. diabetes
b. cholesterol infection
c. insulation
d. glaciation
Answer  Explanation 

ANSWER: diabetes

Explanation:
No explanation is available for this question!