NEET Biology — Body Fluids and Circulation

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What is the lifespan of red blood cells (RBCs) in humans?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Body Fluids and Circulation. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Lifespan, Component, Responsible, Transport, Following, and Statements.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. What is the lifespan of red blood cells (RBCs) in humans?

A. 30 days
B. 60 days
C. 90 days
D. 120 days

Q2. Which component of blood is responsible for oxygen transport?

A. Plasma
B. Leukocytes
C. Erythrocytes
D. Platelets

Q3. Which of the following statements about blood clotting is correct?

A. Platelets do not play any role in clot formation.
B. Prothrombin is converted into thrombin by calcium ions and clotting factors.
C. Fibrinogen is an inactive form of thrombin.
D. Blood clotting is an enzymatic process but does not require calcium ions.

Q4. Which part of the circulatory system directly supplies oxygenated blood to the heart muscle?

A. Pulmonary circulation
B. Systemic circulation
C. Coronary circulation
D. Hepatic portal circulation

Q5. Which hormone is released in response to low blood pressure and helps retain water?

A. Adrenaline
B. Insulin
C. Antidiuretic hormone (ADH)
D. Glucagon

+ 5 more questions in the actual test

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