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Class 11 Biology — Chapter 15: Body Fluids and Circulation
60 practice questions · 20 Easy · 20 Medium · 20 Hard
Free NCERT-aligned multiple-choice practice for Class 11 Biology, Chapter 15 (Body Fluids and Circulation). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 60.
Sample questions
Q1Easy
RBCs in adults are produced in:
A.Bone marrow✓ correct
B.Liver
C.Spleen
D.Heart
Why
Red marrow of long bones.
Q2Medium
Plasma constitutes about ___ of blood volume.
A.55%✓ correct
B.5%
C.95%
D.30%
Why
Cells ~45%, plasma ~55%.
Q3Hard
Universal donor blood group:
A.O-negative✓ correct
B.AB-positive
C.A-positive
D.B-negative
Why
No A, B antigens or Rh factor.
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