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.What is the process called by which several molecules of glucose are converted into one molecule of starch?
- A.Polymerisation
- B.Hydrolysis
- C.Fermentation
- D.Oxidation
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2.In the photosynthesis equation, which single substance is both a raw material and also reproduced as an end product?
- A.Carbon dioxide (CO₂)
- B.Oxygen (O₂)
- C.Water (H₂O)
- D.Glucose (C₆H₁₂O₆)
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3.A plant is kept in a dark cupboard for about 48 hours before conducting an experiment on photosynthesis to:
- A.Remove starch from the plant.
- B.Ensure that starch is not translocated from the leaves.
- C.Remove chlorophyll from the leaf of the plant.
- D.Remove starch from the experimental leaf.
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4.Which experimental setup and observation would prove that oxygen is released during photosynthesis?
- A.Place Hydrilla in a beaker, cover with a funnel and test tube, expose to sunlight, and test collected gas with a glowing splinter that bursts into flame.
- B.Submerge Hydrilla in a beaker, cover with a jar, and observe bubbles forming on leaves in darkness.
- C.Expose Hydrilla to sunlight in a beaker, add lime water, and observe it turning milky.
- D.Place Hydrilla in a test tube with water, invert over a flame, and observe the flame extinguishing.
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5.Which statement accurately distinguishes between chloroplast and chlorophyll?
- A.Chloroplast is a pigment, while chlorophyll is an organelle.
- B.Chloroplast is a living organelle, while chlorophyll is a non-living pigment.
- C.Chloroplast absorbs light, while chlorophyll synthesizes glucose.
- D.Chloroplast is found in heterotrophs, while chlorophyll is found in autotrophs.
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