ICSE Class 10 Ecosystem — Mock Test (2027)
Free online mock test for Ecosystem (ICSE Class 10 Botany) — 76 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 Ecosystem 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.Plants are called producers because they:
- A.Fix carbon dioxide
- B.Consume herbivores
- C.Decompose dead organic matter
- D.Release energy as heat only
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2.Producers belong to which trophic level in a food chain?
- A.First trophic level
- B.Second trophic level
- C.Third trophic level
- D.Fourth trophic level
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3.The major reservoir of carbon on earth is:
- A.Oceans
- B.The atmosphere only
- C.Soil crust only
- D.Living biomass only
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4.Which of the following statements about productivity is NOT correct?
- A.Primary production is the amount of biomass produced per unit area over a time period by plants during photosynthesis
- B.Secondary productivity is the rate of formation of new organic matter by consumers
- C.Gross primary productivity is the rate of production of organic matter during photosynthesis
- D.Net primary productivity is the biomass produced by consumers after respiration
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5.Which of the following statements about energy flow in ecosystems is INCORRECT?
- A.Sun is the only source of energy for all ecosystems except the deep sea hydro-thermal ecosystem
- B.Less than 50 per cent of incident solar radiation is photosynthetically active radiation
- C.Plants capture only 2-10 per cent of the PAR
- D.Energy flow in an ecosystem is cyclic and bidirectional
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