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
-
1.What occurs when chlorophyll molecules become excited in the presence of light?
- A.They split carbon dioxide molecules into carbon and oxygen.
- B.They raise electrons to a higher energy level.
- C.They convert ADP directly into ATP.
- D.They release hydrogen ions to form glucose.
-
2.What happens during photorespiration?
- A.Uptake of oxygen and production of carbon dioxide
- B.Release of glucose
- C.Uptake of carbon dioxide and release of oxygen
- D.Absorption of chlorophyll
-
3.A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis in order to
- A.remove chlorophyll from the leaves.
- B.remove starch from the leaves.
- C.ensure that no photosynthesis occurred.
- D.ensure that the leaves are free from starch.
-
4.Which of the following sequences correctly represents the steps involved in the light phase of photosynthesis?
- A.1. Chlorophyll absorbs photons → 2. Water splits into H⁺ and OH⁻ → 3. NADP forms NADPH → 4. Oxygen released → 5. ADP converts to ATP.
- B.1. Chlorophyll absorbs photons → 2. CO₂ splits into carbon and oxygen → 3. NADP forms NADPH → 4. Oxygen released → 5. ADP converts to ATP.
- C.1. Chlorophyll absorbs photons → 2. Water splits into H⁺ and OH⁻ → 3. ATP forms ADP → 4. Oxygen released → 5. NADP forms NADPH.
- D.1. Chlorophyll absorbs photons → 2. Water splits into H⁺ and OH⁻ → 3. NADP forms NADPH → 4. Glucose formed → 5. ADP converts to ATP.
-
5.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.
Ready? Take the full 20-question test free — instant marking, no sign-up needed.
▶ Start free mock test