Blood & Plasma — NEET Biology MCQs with Solutions
Free NEET Biology Blood & Plasma MCQs with step-by-step solutions (6 questions). Part of Body Fluids and Circulation. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Blood & Plasma · easy · theory
The straw-coloured, fluid matrix of blood (about 55% of blood volume) is called:
A. Plasma ✓ Correct
B. Haemoglobin
C. Serum
D. Lymph
Solution: Plasma is the liquid part of blood (~55%); serum is plasma without clotting factors.
Q2 — Blood & Plasma · easy · theory
The most abundant plasma protein, responsible for maintaining osmotic balance, is:
A. Fibrinogen
B. Globulin
C. Haemoglobin
D. Albumin ✓ Correct
Solution: Albumins maintain the osmotic (oncotic) pressure; globulins are for defence and fibrinogen for clotting.
Q3 — Blood & Plasma · medium · theory
The plasma proteins fibrinogen, globulins and albumins are chiefly involved in, respectively:
A. Osmotic balance, clotting and defence
B. Clotting, defence and osmotic balance ✓ Correct
C. Defence, clotting and transport
D. Transport, defence and clotting
Solution: Fibrinogen → clotting; globulins → immune defence; albumins → osmotic balance.
Q4 — Blood & Plasma · medium · theory
Blood is considered a ______ tissue because:
A. Nervous; it conducts impulses
B. Muscular; it contracts
C. Connective; it has a fluid matrix (plasma) with cells ✓ Correct
D. Epithelial; it lines cavities
Solution: Blood is a fluid connective tissue — formed elements (cells) suspended in a plasma matrix.
Q5 — Blood & Plasma · hard · theory
Serum differs from plasma in that serum:
A. Has more clotting factors
B. Lacks all proteins
C. Contains blood cells
D. Lacks clotting factors (fibrinogen) ✓ Correct
Solution: Serum = plasma minus the clotting proteins (fibrinogen and others consumed during clotting).
Q6 — Blood & Plasma · hard · theory
Plasma without formed elements contains ~90–92% water and important ions including:
A. Only proteins
B. Only oxygen
C. Na⁺, Ca²⁺, Mg²⁺, HCO₃⁻ and Cl⁻ ✓ Correct
D. Only glucose
Solution: Plasma carries minerals (Na⁺, Ca²⁺, Mg²⁺, bicarbonate, chloride), glucose, amino acids, lipids and proteins.