MCQ practice · SSC Biology Board questions · Chapter 13: Environment of Life
Which one is a physical component of an ecosystem?
Think it through first, then pick an option.
- a temperature
- b dead body
- c oxygen
- d water
Answer and explanation
Correct answer: a temperature
Temperature, like sunlight and air pressure, is a physical component that shapes weather and climate.
Why the other options are wrong
- b dead body: A dead body turns into humus; that is organic non-living matter, not a physical component.
- c oxygen: The book lists oxygen as an inorganic component, not among the physical components.
- d water: Water is an inorganic component; the physical list is sunlight, temperature, water vapour, air pressure, depth and altitude.
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