Body Fluids and Circulation Practice Questions

NEET · Biology · 1010 free MCQs with instant results and detailed explanations.

1010

Total

210

Easy

449

Medium

351

Hard

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Topics in Body Fluids and Circulation

Lymph 179

ECG 161

Blood Composition 170

Heart Structure and Function 168

Circulatory Pathways 164

Blood Groups 168

Sample Questions from Body Fluids and Circulation

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Easy

Which component of blood is responsible for immunity?

A. Plasma

B. Red blood cells

C. White blood cells

D. Platelets

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Correct Answer: C

White blood cells are crucial for the immune response, defending the body against infections, making option C correct.

Easy

What percentage of blood is composed of plasma?

A. 55%

B. 45%

C. 70%

D. 30%

Show Answer & Explanation

Correct Answer: A

Approximately 55% of blood volume is plasma, which contains water, electrolytes, and proteins, confirming option A.

Easy

Which protein in blood plasma helps in blood clotting?

A. Albumin

B. Globulin

C. Fibrinogen

D. Hemoglobin

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Correct Answer: C

Fibrinogen is a key protein in the blood plasma that converts into fibrin during the clotting process, making option C correct.

Medium

What percentage of blood plasma is composed of water?

A. 90%

B. 55%

C. 70%

D. 80%

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Correct Answer: A

Blood plasma is approximately 90% water, which serves as a solvent for various substances.

Medium

Which component of blood is primarily responsible for gas transport?

A. Platelets

B. Red Blood Cells

C. White Blood Cells

D. Plasma Proteins

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Correct Answer: B

Red Blood Cells contain hemoglobin which binds to oxygen and carbon dioxide, facilitating gas transport.

Medium

Which of the following is NOT a function of plasma proteins?

A. Transport of nutrients

B. Clotting of blood

C. Immune response

D. Oxygen transport

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Correct Answer: D

Oxygen transport is primarily the role of red blood cells, not plasma proteins.

Medium

Which type of white blood cell is primarily involved in the immune response?

A. Neutrophils

B. Eosinophils

C. Lymphocytes

D. Monocytes

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Correct Answer: C

Lymphocytes, particularly T and B cells, play crucial roles in the immune response against pathogens.

Hard

Which of the following components of blood is primarily responsible for the transport of oxygen?

A. Red Blood Cells

B. White Blood Cells

C. Platelets

D. Plasma

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Correct Answer: A

Red Blood Cells contain hemoglobin, which binds to oxygen, enabling efficient transport throughout the body.

Hard

How much of the total blood volume is made up of plasma in a healthy adult?

A. 40-50%

B. 50-60%

C. 60-70%

D. 70-80%

Show Answer & Explanation

Correct Answer: B

In a healthy adult, plasma constitutes about 55-60% of total blood volume, accounting for the majority of blood's liquid component.

Q10

Hard

Which type of white blood cell is primarily involved in the immune response against parasites?

A. Neutrophils

B. Lymphocytes

C. Eosinophils

D. Monocytes

Show Answer & Explanation

Correct Answer: C

Eosinophils are specialized white blood cells that respond primarily to parasitic infections, playing a key role in the immune response.

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Body Fluids and Circulation — NEET Biology Practice Questions Online

This page contains 1010 practice MCQs for the chapter Body Fluids and Circulation in NEET Biology. The questions are organized by difficulty — 210 easy, 449 medium, 351 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 6 topics, giving you comprehensive coverage of the entire chapter.