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Our Environment — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceOur Environment1 Mark
MCQ
In an ecosystem :
  • A
    Cycling of energy and nutrients is a coupled process.
  • B
    Cycling of energy is an independent process.
  • ✓
    Movement of energy is unidirectional.
  • D
    Movement of energy is bidirectional.
✓

Answer

Correct option: C.
Movement of energy is unidirectional.
The flow of energy is unidirectional. The energy that is captured by the autotrophs does not revert back to the solar input and the energy which passes to the herbivores does not come back to autotrophs. As it moves progressively through the various trophic levels it is no longer available to the previous level.

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