Class 11 Biology — Chapter 15: Body Fluids and Circulation
60 practice questions · 20 Easy · 20 Medium · 20 Hard
Practise Class 11 Biology Chapter 15, "Body Fluids and Circulation", with 60 NCERT-aligned multiple-choice questions. The set is split into 20 Easy, 20 Medium and 20 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and NEET UG.
"Body Fluids and Circulation" is one of the chapters where diagram-based recall, terminology and NCERT line-by-line accuracy really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Body Fluids and Circulation, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Biology mastery score. A few sample questions are shown below; sign in free to practise all 60.
Key concepts: Body Fluids and Circulation (Class 11 Biology)
This chapter covers blood and lymph, the structure of the human heart, the cardiac cycle, and the double circulation pathway.
- Blood components
- Plasma plus formed elements — RBCs, WBCs and platelets; blood groups (ABO, Rh) and clotting are covered.
- Lymph
- Tissue fluid that returns to circulation; transports fats and supports immunity.
- Human heart
- Four-chambered (two atria, two ventricles); valves prevent backflow; myogenic, paced by the SA node.
- Cardiac cycle
- Rhythmic systole and diastole; cardiac output = stroke volume × heart rate.
- Double circulation
- Pulmonary (heart–lungs) and systemic (heart–body) circuits keep oxygenated and deoxygenated blood separate.
Key formulas — Body Fluids and Circulation
💡 Exam tips for Body Fluids and Circulation
- The SA node is the heart's pacemaker — the heartbeat is myogenic (originates in the heart muscle).
- Double circulation keeps oxygenated and deoxygenated blood separate — efficient for mammals/birds.
Sample questions
RBCs in adults are produced in:
Red marrow of long bones.
Plasma constitutes about ___ of blood volume.
Cells ~45%, plasma ~55%.
Universal donor blood group:
No A, B antigens or Rh factor.
Body Fluids and Circulation — FAQs
What are the key concepts in Class 11 Biology Body Fluids and Circulation?+
This chapter covers blood and lymph, the structure of the human heart, the cardiac cycle, and the double circulation pathway. Key ideas include Blood components, Lymph, Human heart, Cardiac cycle, Double circulation.
What does Class 11 Biology Chapter 15 (Body Fluids and Circulation) cover on XamBaaz?+
It covers 60 NCERT-aligned MCQs on "Body Fluids and Circulation" — 20 Easy, 20 Medium and 20 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and NEET UG.
Are these "Body Fluids and Circulation" questions free to practise?+
Yes — sign in with Google to practise "Body Fluids and Circulation" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Body Fluids and Circulation" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Practise all 60 questions free
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