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Science — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] straightforward initial-understanding
Which respiratory pigment carries oxygen in human blood, and in which cells is it found? (a) Haemoglobin, red blood corpuscles (b) Haemoglobin, white blood cells (c) Chlorophyll, red blood corpuscles (d) Plasma, platelets
  1. a Haemoglobin, red blood corpuscles
  2. b Haemoglobin, white blood cells
  3. c Chlorophyll, red blood corpuscles
  4. d Plasma, platelets
Generated by claude-sonnet-4-6 · 2026-06-15 06:42 · grounding rag
Model Answer

(a) Haemoglobin, red blood corpuscles

Haemoglobin is the respiratory pigment in human blood that carries oxygen, and it is found in red blood corpuscles (RBCs).

Source: Life Processes, Section 5.4.1

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Explanation

The passage clearly states: "Oxygen is carried by the red blood corpuscles" and Activity 5.7 directly references haemoglobin content in human beings. Chlorophyll is a plant pigment (photosynthesis), not a blood pigment. Plasma transports food and CO₂ in dissolved form, not oxygen. White blood cells (WBCs) are part of the immune system, not oxygen carriers. Platelets help in clotting. So option (a) is the only correct choice.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.