ICSE Class 10 Photosynthesis in Higher Plants — Mock Test (2027)
Free online mock test for Photosynthesis in Higher Plants (ICSE Class 10 Botany) — 78 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Photosynthesis in Higher Plants chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Light saturation of photosynthesis occurs at about what fraction of full sunlight?
- A.10 per cent of full sunlight
- B.50 per cent of full sunlight
- C.100 per cent of full sunlight
- D.2 per cent of full sunlight
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2.Why do C4 plants lack photorespiration?
- A.They lack RuBisCO entirely
- B.A mechanism increases CO2 concentration at the enzyme site, ensuring RuBisCO acts as a carboxylase
- C.Their stomata never close
- D.They have no bundle sheath cells
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3.Arrange the stages of the Calvin cycle in correct order beginning with CO2 fixation: (i) regeneration of RuBP (ii) reduction forming triose phosphate (iii) carboxylation of RuBP to form 3-PGA.
- A.iii, ii, i
- B.i, ii, iii
- C.ii, iii, i
- D.iii, i, ii
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4.According to the chemiosmotic hypothesis, ATP synthesis in the chloroplast is linked to:
- A.A proton gradient across the thylakoid membrane
- B.The direct absorption of light by ATP synthase
- C.The breakdown of glucose in the stroma
- D.Oxidation of NADPH in the lumen
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5.Chromatographic separation of leaf pigments reveals how many pigments?
- A.Two pigments
- B.Three pigments
- C.Four pigments
- D.Five pigments
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