The Circulatory System - ICSE STD 10 Biology Questions

Q 1MCQ1 Mark

Assertion (A): RBCs contain mitochondria to generate energy.
Reason (R): RBCs lack a nucleus and other organelles.

A
A is True and R is False.
✓
A is False and R is True.
C
Both A and R are True.
D
Both A and R are False.

Answer: B.

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Q 2MCQ1 Mark

Which of the following is correct?

A
Double circulation is a characteristic of all vertebrates.
B
Blood volume in pulmonary circulation is higher than the volume of blood in systemic circulation at any instant.
C
A double aortic arch can be seen in birds and mammals.
✓
Blood pressure in pulmonary circulation is lesser than that of the systemic circulation.

Answer: D.

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Q 3MCQ1 Mark

Assertion (A): WBCs can move through blood vessel walls to reach tissues,
Reason (R): This ability allows WBCs to target pathogens directly in the body tissues.

A
A is True and R is False.
B
A is False and R is True.
✓
Both A and R are True.
D
Both A and R are False.

Answer: C.

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Q 4MCQ1 Mark

The artery that supplies blood to all parts of the body is called :

A
pulmonary
✓
aorta
C
pulmonary arch
D
systematic arch

Answer: B.

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Q 5MCQ1 Mark

Assertion (A): RBCs are biconcave in shape.
Reason (R): The biconcave shape of RBCs increases their surface area for oxygen exchange.

A
A is True and R is False.
B
A is False and R is True.
✓
Both A and R are True.
D
Both A and R are False.

Answer: C.

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Q 6[1 Mark Question Answer]1 Mark

Name the following:
An instrument used to measure the blood pressure.

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Q 7[1 Mark Question Answer]1 Mark

Name the following:
A type of blood circulation found in mammals.

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Q 8[1 Mark Question Answer]1 Mark

Name the following:
A type of disease develops when a number of WBCs increases.

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Q 9[1 Mark Question Answer]1 Mark

Name the following:
The process of engulfing the microbes by WBCs or Amoeba.

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Q 10[1 Mark Question Answer]1 Mark

Name the following:
Average life span of RBCs.

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Q 11[2 Mark Question Answer]2 Marks

SHORT ANSWER TYPE QUESTIONS
Rahul fell and scraped his knee while playing. His bleeding stopped, and a scab formed, which his mother explained as a natural process to prevent too much blood loss.
(i) What is the primary reason for the formation of a scab over Rahul's wound?
(ii) What can happen if blood clotting does not occur properly in the body?

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Q 12[2 Mark Question Answer]2 Marks

SHORT ANSWER TYPE QUESTIONS
Given below are two statements which are incorrect. Rewrite the correct statements;
(i) Arteries carry blood away from the heart, while veins carry blood to the heart.
(ii) Capillaries are thick-walled blood vessels that transport oxygenated blood.

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Q 13[2 Mark Question Answer]2 Marks

Give significance of hepatic portal system.

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Q 14[2 Mark Question Answer]2 Marks

SHORT ANSWER TYPE QUESTIONS
A 60-year-old man, Mr. Patel, presents with severe chest pain radiating to his left arm and shortness of breath. After conducting various diagnostic tests, the doctor diagnoses him with a blocked coronary artery. Mr. Patel's family is concerned about his condition and seeks clarification on the role of blood vessels in the heart and their significance in his diagnosis.