ICSE Class 10 Photosynthesis — Mock Test (2027)
Free online mock test for Photosynthesis (ICSE Class 10 Biology) — 20 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 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.A plant physiologist is investigating the effects of de-starching on a plant. The plant is treated to remove stored starch from certain parts before conducting experiments on photosynthesis. A de-starched plant is one whose:
- A.leaves are free from chlorophyll
- B.aerial parts are free from starch
- C.leaves are free from starch
- D.plant is free from starch
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2.Why is it necessary to place a plant in the dark before starting an experiment on photosynthesis?
- A.To ensure any starch detected is newly produced during the experiment, providing a clear baseline.
- B.To increase the plant's chlorophyll production for better photosynthesis results.
- C.To prevent the plant from absorbing excess oxygen, which could interfere with the experiment.
- D.To slow down the plant's metabolic rate and conserve energy for the experiment.
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3.What is the primary acceptor of atmospheric carbon dioxide in the dark reaction?
- A.4RuBP
- B.ATP
- C.NADP
- D.Chlorophyll
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4.What is the primary function of chlorophyll in plants?
- A.To absorb sunlight
- B.To split water molecules
- C.To produce glucose directly
- D.To release carbon dioxide
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5.Which of the following are the raw materials required for photosynthesis?
- A.Carbon dioxide and water
- B.Oxygen and glucose
- C.Nitrogen and water
- D.Chlorophyll and sunlight
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