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Question

The structural and functional unit of nature is _________.

This question was previously asked in
RRB NTPC 2025 Graduate CBT 2 Question Paper PDF (10-Jul-2026) (Shift 1)
The correct answer is

Ecosystem

An ecosystem is a community of living organisms interacting with one another and with their non-living physical environment as a single functional system.

Because it links the structural components (organisms and their surroundings) with functional processes such as energy flow and nutrient cycling, the ecosystem is regarded as the structural and functional unit of nature.

Ecology is the study of these interactions, environment is the surroundings, and the cell is the unit of life, so none of these is the functional unit of nature itself.

Hence, the structural and functional unit of nature is the Ecosystem.

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