The flow of energy in an ecosystem is:
ACircular among trophic levels (option)
BUnidirectional from Sun → producers → consumers → decomposers
CReversible at every step
DIndependent of sunlight
Answer & Solution
Correct answer: B. Unidirectional from Sun → producers → consumers → decomposers
1. Sunlight is captured by producers and passed on.
2. At each trophic level much energy is lost; what remains moves to the next level.
3. Energy never flows back to a previous trophic level — flow is one-way.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.1.1_
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