Class 11 Biology Body Fluids and Circulation MCQ

Body Fluids and Circulation MCQ: Body Fluids and Circulation is a crucial topic in CBSE Class 11 Biology and NEET MCQs, exploring the intricate world of human physiological systems. These multiple-choice questions challenge students’ understanding of blood circulation, cardiovascular dynamics, and the fundamental roles of body fluids. For NEET aspirants, mastering this subject requires strategic learning, focusing on key concepts of how blood and fluids maintain the body’s internal balance. The Class 11 biology MCQs in this section test not just memorization, but deep analytical comprehension of physiological processes essential for medical entrance examinations.

Body Fluids and Circulation MCQ

Body fluids and circulation encompass the study of essential fluids like blood and lymph that flow within living organisms. This field explores how these fluids are composed, transported, and function to sustain life. Key topics include the composition and functions of blood, including its role in oxygen transport, immune response, and waste removal. It also delves into the structure and function of the heart, blood vessels (arteries, veins, capillaries), and the lymphatic system, including lymph nodes and their role in immunity. Understanding these intricate systems is crucial for comprehending various physiological processes and maintaining overall health. In this article we have curated Body Fluids and Circulation MCQ with answers that will help students in their NEET as well CBSE exams

Also Check: Class 11 Biology MCQs

• Human Physiology MCQs
• Living World MCQs
• Microbiology MCQs
• Photosynthesis in Higher Plants MCQs
• Chemical Coordination and Integration MCQs

CBSE Class 11 Biology Body Fluids and Circulation MCQ with Answers

Q1. Which of the following is the main component of blood plasma?

A) Red blood cells

B) White blood cells

C) Water

D) Platelets

Answer: C) Water

Q2. Which type of white blood cell is primarily responsible for combating infections caused by parasites?

A) Neutrophils

B) Eosinophils

C) Basophils

D) Lymphocytes

Answer: B) Eosinophils

Q3. Which of the following is NOT a function of blood?

A) Transportation of oxygen

B) Regulation of body temperature

C) Production of hormones

D) Protection against pathogens

Answer: C) Production of hormones

Q4. What is the primary function of platelets in the blood?

A) Transport oxygen

B) Fight infections

C) Aid in blood clotting

D) Regulate blood pressure

Answer: C) Aid in blood clotting

Q5. What is the normal range of hemoglobin levels in adult males?

A) 10-12 g/dL

B) 12-14 g/dL

C) 14-16 g/dL

D) 16-18 g/dL

Answer: C) 14-16 g/dL

Q6. Which of the following blood vessels carries oxygenated blood from the lungs to the heart?

A) Pulmonary artery

B) Pulmonary vein

C) Aorta

D) Vena cava

Answer: B) Pulmonary vein

Q7. What is the main function of the lymphatic system?

A) Transporting oxygen

B) Regulating blood pressure

C) Draining excess tissue fluid and fighting infections

D) Producing red blood cells

Answer: C) Draining excess tissue fluid and fighting infections

Q8. Which of the following is a function of the spleen in the circulatory system?

A) Producing blood cells

B) Filtering blood

C) Regulating blood pressure

D) Controlling body temperature

Answer: B) Filtering blood

Q9. Which type of blood vessel has the thickest walls?

A) Capillaries

B) Veins

C) Arteries

D) Venules

Answer: C) Arteries

Q10. What is the lifespan of a typical red blood cell in human blood?

A) 20 days

B) 50 days

C) 80 days

D) 120 days

Answer: D) 120 days

Q11. Which of the following is NOT a type of blood vessel?

A) Arteries

B) Veins

C) Capillaries

D) Lymph nodes

Answer: D) Lymph nodes

Q12. What is the main function of hemoglobin in red blood cells?

A) Transporting nutrients

B) Fighting infections

C) Transporting oxygen

D) Regulating pH levels

Answer: C) Transporting oxygen

Q13. Which component of blood is primarily involved in immune responses?

A) Red blood cells

B) White blood cells

C) Platelets

D) Plasma

Answer: B) White blood cells

Q14. What is the term for the liquid portion of blood that remains after clotting has occurred?

A) Plasma

B) Serum

C) Lymph

D) Interstitial fluid

Answer: B) Serum

Q15. Which blood type is considered the universal donor?

A) A

B) B

C) AB

D) O

Answer: D) O

Q16. Which of the following hormones is responsible for increasing the production of red blood cells?

A) Insulin

B) Epinephrine

C) Erythropoietin

D) Cortisol

Answer: C) Erythropoietin

Q17. Which organ is primarily responsible for the production of blood cells?

A) Liver

B) Spleen

C) Bone marrow

D) Lymph nodes

Answer: C) Bone marrow

Q18. Which component of blood is responsible for transporting nutrients and waste products?

A) Red blood cells

B) White blood cells

C) Platelets

D) Plasma

Answer: D) Plasma

Q19. What is the primary role of the heart in the circulatory system?

A) Filtering blood

B) Producing blood cells

C) Pumping blood throughout the body

D) Regulating blood pressure

Answer: C) Pumping blood throughout the body

Q20. What is the term for the smallest blood vessels in the body?

A) Arteries

B) Veins

C) Capillaries

D) Arterioles

Answer: C) Capillaries

Q21. Which of the following is NOT a function of the lymphatic system?

A) Draining excess tissue fluid

B) Transporting oxygen

C) Fighting infections

D) Absorbing dietary fats

Answer: B) Transporting oxygen

Q22. What is the main function of the aorta in the circulatory system?

A) Carrying oxygenated blood to the body

B) Returning deoxygenated blood to the heart

C) Producing white blood cells

D) Regulating blood pressure

Answer: A) Carrying oxygenated blood to the body

Q23. Which blood component is responsible for forming blood clots?

A) Red blood cells

B) White blood cells

C) Platelets

D) Plasma

Answer: C) Platelets

Q24. Which of the following is a function of the pulmonary circuit in the circulatory system?

A) Transporting oxygenated blood to the body

B) Returning deoxygenated blood to the heart

C) Exchanging gases in the lungs

D) Regulating blood pressure

Answer: C) Exchanging gases in the lungs

Q25. What is the main role of the lymph nodes in the immune system?

A) Producing red blood cells

B) Filtering lymph fluid

C) Transporting oxygen

D) Regulating body temperature

Answer: B) Filtering lymph fluid

Q26. Which of the following blood vessels carries deoxygenated blood from the heart to the lungs?

A) Pulmonary artery

B) Pulmonary vein

C) Aorta

D) Vena cava

Answer: A) Pulmonary artery

Q27. Which component of blood is primarily responsible for buffering pH levels?

A) Red blood cells

B) White blood cells

C) Platelets

D) Plasma

Answer: D) Plasma

Q28. What is the function of the bicuspid (mitral) valve in the heart?

A) Preventing backflow of blood from the left ventricle to the left atrium

B) Preventing backflow of blood from the right ventricle to the right atrium

C) Preventing backflow of blood from the left atrium to the left ventricle

D) Preventing backflow of blood from the right atrium to the right ventricle

Answer: A) Preventing backflow of blood from the left ventricle to the left atrium

Q29. Which of the following is a function of albumin in blood plasma?

A) Transporting oxygen

B) Fighting infections

C) Maintaining osmotic pressure

D) Clotting blood

Answer: C) Maintaining osmotic pressure

Q30. What is the main function of the coronary arteries?

A) Supplying oxygenated blood to the heart muscle

B) Transporting deoxygenated blood to the lungs

C) Removing waste products from tissues

D) Regulating blood pressure

Answer: A) Supplying oxygenated blood to the heart muscle