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Q25
(CISF/2022)
Environment & Ecology › Ecology & Ecosystem Basics
Which one of the following is known as the life-supporting zone of the Earth ?
Result
Your answer:
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·
Correct:
B
Explanation
The Biosphere is known as the life-supporting zone of the Earth. It is the narrow zone of contact where the lithosphere (land), hydrosphere (water), and atmosphere (air) meet and interact. It is only within this thin layer that life exists, as it provides the necessary conditions and resources like nutrients, water, and oxygen required for the survival of living organisms.
- Atmosphere refers only to the gaseous envelope surrounding the Earth.
- An Ecosystem is a functional unit where living organisms interact with each other and their physical environment in a specific area.
- A Biome is a large geographical area characterized by specific plants, animals, and climate (e.g., tropical rainforest or desert).
While ecosystems and biomes are components of the biosphere, the biosphere itself is the global sum of all ecosystems and the overall zone that supports life.
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