NEET Botany Energy Flow MCQ Question
If a grassland ecosystem has a standing crop biomass of 1000 kg at the producer level, and the energy decreases by 90% at each successive trophic level, what is the standing crop biomass at the secondary consumer level?
1 kg
10 kg
100 kg
90 kg
Correct Answer
Detailed Explanation
The energy decreases by 90% at each trophic level, so the energy available to primary consumers is 10% of 1000 kg, which is 100 kg. Thus, the secondary consumers would receive 10% of 100 kg, which is 10 kg.
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