Ecosystem Analysis and Resilience
ICSE · Class 11 · Environmental Science
Most important questions from Ecosystem Analysis and Resilience for ICSE Class 11 Environmental Science board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
What do decomposers do in an ecosystem?
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Break down organic matter and return nutrients to the environment
Decomposers break down dead organic matter and release nutrients back into the environment for reuse.
Which is a physical limiting factor in an ecosystem?
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Temperature
Limiting factors may be physical, such as temperature, light, water, and nutrients, or biological, such as disease and predation.
Which is a biological limiting factor?
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Competition
Biological limiting factors include competition, disease, predation, and parasitism.
What is the zone of tolerance?
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The range between the maximum and minimum limits within which an organism can survive, grow, and reproduce
The zone of tolerance is the full survivable range for an environmental factor, also called the zone of compatibility.
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