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 differentiates stroma from grana in a chloroplast?
   • A.Stroma is the site of light reaction, while grana is the site of dark reaction.
   • B.Stroma is a non-green granular matrix, while grana are green flattened sac-like structures.
   • C.Stroma contains chlorophyll, while grana do not contain chlorophyll.
   • D.Stroma surrounds the chloroplast, while grana are located outside the chloroplast.
2. 2.Which equation correctly summarizes the dark reaction (Calvin cycle) of photosynthesis?
   • A.6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
   • B.6 CO₂ + 12 NADPH + 18 ATP → C₆H₁₂O₆ + 12 NADP + 18 ADP + 18 Pi + 6 H₂O
   • C.C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + ATP
   • D.12 H₂O + 12 NADP → 6 O₂ + 12 NADPH + 18 ATP
3. 3.What happens in photolysis during the light-dependent reaction of photosynthesis?
   • A.Water molecules are split into oxygen, protons, and electrons using light energy.
   • B.Carbon dioxide is converted into glucose using light energy.
   • C.Oxygen molecules combine with protons to form water.
   • D.Light energy is stored directly in ATP without splitting water.
4. 4.Which plant tissue is responsible for transporting starch from the leaves to all parts of the plant body?
   • A.Xylem.
   • B.Phloem.
   • C.Cortex.
   • D.Epidermis.
5. 5.The individual flattened stacks of membranous structures inside the chloroplasts are known as:
   • a.Grana
   • b.Stroma
   • c.Thylakoids
   • d.Cristae