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.Nutrient cycling is of two types. Which reservoir is correctly matched with the sedimentary type of cycle?
- A.Earth's crust - phosphorus
- B.Atmosphere - carbon
- C.Hydrosphere - carbon
- D.Atmosphere - phosphorus
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2.Although oceans occupy about 70 per cent of Earth's surface, their net primary productivity (55 billion tons) is far below that of land. This indicates that productivity:
- A.Depends on factors such as nutrient availability and photosynthetic capacity, not just area
- B.Is determined only by the surface area covered
- C.Is always higher in larger ecosystems
- D.Is independent of environmental factors
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3.The process by which water-soluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts is:
- A.Leaching
- B.Catabolism
- C.Mineralisation
- D.Fragmentation
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4.Decomposers such as fungi and bacteria that meet their energy needs by degrading dead organic matter are also known as:
- A.Saprotrophs
- B.Autotrophs
- C.Producers
- D.Herbivores
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5.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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