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Subjects
Science State Board
Class 10
Transportation in plants & Circulation in animals
Circulation in animals

20. Closed, open type circulation, blood vessels and heartbeat

Exercise condition:

6 m.

Examine the statements below and choose the correct answer:

1.

Assertion (A):	RBC plays an important role in the transport of respiratory gases.
Reasoning (R):	RBC do not have cell organelles and nucleus.

Both A and R are true and R is the correct explanation of A
Both A and R are false
A is false but R is true
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false

2.

Assertion (A):	Left ventricle of the heart has a thinner wall than that of right ventricle.
Reasoning (R):	Left ventricle pumps blood nearby the lungs.

A is true but R is false
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is NOT the correct explanation of A
Both A and R are false
A is false but R is true

3.

Assertion (A):	Neutrophils increases during allergy and parasitic infections.
Reasoning (R):	Neutrophils release histamine and serotonin during inflammation

A is true but R is false
Both A and R are false
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is NOT the correct explanation of A
A is false but R is true

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