NeetVictoryQuestion 1: Blood Composition and Blood Groups
The erythrocytes in the adult humans are formed in the:
- A kidney
- B red bone marrow
- C spleen
- D liver
Answer: B. red bone marrow
Why: They lack the nucleus in most of the mammals.
NEET Biology: Body Fluids and Circulation. Chapter-wise Practice Questions and Test
Body Fluids and Circulation is a Class 11 Biology chapter that carries about 2.5% of the Biology questions in NEET. Practise it with 61 questions covering 4 topics, each with an explanation.
Practise Body Fluids and Circulation
Open in the appSets of 15 questions that adapt to your level, with an explanation for every answer.
Topics covered in Body Fluids and Circulation
- Blood Composition and Blood Groups (31 questions)
- Cardiac Cycle and Heart Sounds (2 questions)
- Composition and Function of Blood (3 questions)
- Human Heart and Cardiac Cycle (25 questions)
How often Body Fluids and Circulation has come up in NEET
Across the 13 previous year papers, Body Fluids and Circulation had 26 questions, about 2.0 a year. The most in one paper was 3, in Re-AIPMT 2015.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 2 |
| NEET 2025 | 1 |
| NEET 2024 | 2 |
| NEET 2023 | 1 |
| NEET 2022 | 3 |
| NEET 2021 | 2 |
| NEET 2020 | 2 |
| NEET 2019 | 2 |
| NEET 2018 | 2 |
| NEET 2017 | 3 |
| NEET 2016 | 1 |
| Re-AIPMT 2015 | 3 |
| AIPMT 2014 | 2 |
Sample questions on Body Fluids and Circulation with answers
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Question 2: Cardiac Cycle and Heart Sounds
The first heart sound ("lub") is produced by the closure of the:
- A semilunar valves
- B tricuspid and bicuspid (AV) valves
- C aorta
- D pulmonary vein
Answer: B. tricuspid and bicuspid (AV) valves
Why: Closure of the atrioventricular (tricuspid and bicuspid) valves at the start of ventricular systole produces the low-pitched "lub" sound.
Question 3: Composition and Function of Blood
Which blood group is regarded as the universal recipient?
- A O
- B AB
- C A
- D B
Answer: B. AB
Why: AB blood has both A and B antigens on the RBC surface but no anti-A or anti-B antibodies in the plasma, so it can receive blood from any ABO group without agglutination.
Question 4: Human Heart and Cardiac Cycle
The hepatic portal system is the:
- A connection between the heart and lungs
- B vascular connection between the digestive tract and the liver
- C the lymph system
- D connection between the kidney and heart
Answer: B. vascular connection between the digestive tract and the liver
Why: A portal vein carries the blood from the intestine to the liver before it goes to the heart.
Question 5: Blood Composition and Blood Groups
A person with blood group AB is considered a universal recipient because their plasma:
- A contains both anti-A and anti-B antibodies
- B lacks both anti-A and anti-B antibodies
- C contains only anti-A antibodies
- D contains Rh antibodies only
Answer: B. lacks both anti-A and anti-B antibodies
Why: AB blood group individuals lack anti-A and anti-B antibodies in their plasma, so they can receive blood from any ABO group without an immune reaction (ignoring Rh factor).
Question 6: Cardiac Cycle and Heart Sounds
An electrocardiogram (ECG) trace shows a P wave, which corresponds to:
- A ventricular contraction
- B depolarisation of the atria
- C ventricular relaxation
- D depolarisation of the ventricles
Answer: B. depolarisation of the atria
Why: The P wave represents the electrical depolarisation that spreads through the atria, immediately preceding atrial contraction.
Question 7: Composition and Function of Blood
Lymph differs from blood in that lymph:
- A carries only oxygen
- B contains more red cells
- C lacks red blood cells and most plasma proteins
- D contains no white cells
Answer: C. lacks red blood cells and most plasma proteins
Why: It is a colourless fluid containing lymphocytes that drains tissue fluid back into the blood.
Question 8: Human Heart and Cardiac Cycle
The coronary circulation supplies the blood to:
- A the cardiac muscles
- B the lungs
- C the brain
- D the liver
Answer: A. the cardiac muscles
Why: A blockage can cause the angina or the heart attack.
Practise all of Body Fluids and Circulation
Open in the appFrequently asked questions
How many questions come from Body Fluids and Circulation in NEET?
Body Fluids and Circulation carries about 2.5% of the Biology questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 26 times, about 2.0 questions a year.
Which class is Body Fluids and Circulation from?
Body Fluids and Circulation is a Class 11 Biology chapter in the NCERT syllabus.
Where can I practise Body Fluids and Circulation questions for NEET?
NeetVictory has 61 practice questions on Body Fluids and Circulation, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.