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Question
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
Options
5 kJ
50 kJ
500 kJ
5000 kJ
Solution
5000 kJ
Explanation -
In an ecosystem, only 10 percent of the energy available at each trophic level is passed on to the next trophic level of the food chain. Thus, if 5 kJ energy is available at the fourth trophic level, 10 percent more that is, 50 kJ energy will be available at the third trophic level, 500 kJ energy will be available at the second trophic level and 5000 kJ energy will be available at the first trophic level or producer level.
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