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In the food chain given below, if the energy at fourth trophic level is 3 kJ, what was the energy available at producer level?
Grass → Grasshopper → Frog → Snake → Hawk
Grass → Grasshopper → Frog → Snake → Hawk
- a)30 kJ
- b)300 kJ
- c)3000 kJ
- d)3 kJ
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
In the food chain given below, if the energy at fourth trophic level i...
The energy available at the producer level can be calculated using the 10% rule. According to the 10% rule, only 10% of the energy from one trophic level is transferred to the next trophic level.
So, if the energy at the fourth trophic level is 3 kJ, then the energy available at the third trophic level (which is the consumer level above the producer level) would be 10% of that, which is 0.1 * 3 kJ = 0.3 kJ.
Similarly, the energy available at the second trophic level would be 10% of the energy at the third trophic level, and so on.
Therefore, the energy available at the producer level (the first trophic level) would be 10% of the energy at the second trophic level, which is 0.1 * 0.3 kJ = 0.03 kJ.
So, if the energy at the fourth trophic level is 3 kJ, then the energy available at the third trophic level (which is the consumer level above the producer level) would be 10% of that, which is 0.1 * 3 kJ = 0.3 kJ.
Similarly, the energy available at the second trophic level would be 10% of the energy at the third trophic level, and so on.
Therefore, the energy available at the producer level (the first trophic level) would be 10% of the energy at the second trophic level, which is 0.1 * 0.3 kJ = 0.03 kJ.
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Community Answer
In the food chain given below, if the energy at fourth trophic level i...
As we know at each level 10 kJ of energy is lost so if 3 kJ is present at the fourth level then 3000kJ of energy is present at the producer level.
So the correct option is 3000kJ.
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