Q1. [1] medium exam-ready
Lymph is similar to blood plasma but differs from it in one important way. Which of the following correctly states this difference?
(A) Lymph contains more red blood cells than plasma.
(B) Lymph is colourless and contains less protein than plasma.
(C) Lymph has a higher concentration of nitrogenous wastes than plasma.
(D) Lymph does not flow in the direction of veins.
- A Lymph contains more red blood cells than plasma.
- B Lymph is colourless and contains less protein than plasma.
- C Lymph has a higher concentration of nitrogenous wastes than plasma.
- D Lymph does not flow in the direction of veins.
Generated by claude-sonnet-4-6 · 2026-06-26 00:58 · grounding rag
Model Answer
(B) Lymph is colourless and contains less protein than plasma.
Source: Life Processes, Section 5.4.1 (Lymph)
Explanation
The textbook states directly: "It (lymph) is similar to the plasma of blood but colourless and contains less protein." Lymph has no RBCs (ruling out A), and options C and D are not supported by the text. Memorise this one-line distinction as it is frequently tested.