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.

Sample questions

1. 1.Which of the following correctly balances the given incomplete chemical equation for photosynthesis: $$\mathrm{CO}_{2} + 12\mathrm{H}_{2}\mathrm{O} \xrightarrow{\text{Chlorophyll}} \mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6} + \mathrm{O}_{2} + \mathrm{H}_{2}\mathrm{O}$$?
   • A.$$6\mathrm{CO}_{2} + 12\mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6} + 6\mathrm{O}_{2} + 6\mathrm{H}_{2}\mathrm{O}$$
   • B.$$\mathrm{CO}_{2} + 6\mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6} + 6\mathrm{O}_{2}$$
   • C.$$6\mathrm{CO}_{2} + 6\mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6} + 6\mathrm{O}_{2}$$
   • D.$$\mathrm{CO}_{2} + 12\mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{6}\mathrm{H}_{12}\mathrm{O}_{6} + 12\mathrm{O}_{2} + 6\mathrm{H}_{2}\mathrm{O}$$
2. 2.Which of the following correctly identifies the exact location and primary function of grana in a plant cell?
   • A.Found in mitochondria; site of cellular respiration.
   • B.Found in chloroplast; site of light reaction of photosynthesis.
   • C.Found in nucleus; site of DNA replication.
   • D.Found in vacuole; site of starch storage.
3. 3.What role do carotenoids play in photosynthesis?
   • a.They produce oxygen
   • b.They absorb and transfer light energy to chlorophyll
   • c.They convert light energy into chemical energy
   • d.They break down chlorophyll
4. 4.Which substance is released as a by-product during photosynthesis?
   • A.Oxygen
   • B.Carbon dioxide
   • C.Glucose
   • D.Water
5. 5.What pigment group primarily absorbs light for photosynthesis?
   • A.Chlorophylls
   • B.Carotenes
   • C.Xanthophylls
   • D.Anthocyanins