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In a grassland ecosystem, if the number of primary producers is approximately 6 million plants, the number of the top carnivores (in million), which may be supported by it may be ________ million.
- a)3
- b)30
- c)6
- d)60
Correct answer is option 'A'. Can you explain this answer?
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In a grassland ecosystem, if the number of primary producers is approx...
Calculation of the number of top carnivores supported by the grassland ecosystem:
1. Trophic levels in a grassland ecosystem:
- Primary producers (plants) are at the first trophic level.
- Herbivores are at the second trophic level.
- Carnivores (including top carnivores) are at higher trophic levels.
2. Energy transfer in an ecosystem:
- Only about 10% of energy is transferred from one trophic level to the next.
- This means that a large number of primary producers are needed to support a smaller number of herbivores and an even smaller number of top carnivores.
3. Calculation:
- If there are 6 million primary producers, and assuming a 10% energy transfer efficiency, the number of herbivores supported would be 6 million / 10 = 0.6 million.
- Similarly, the number of top carnivores supported by the herbivores would be 0.6 million / 10 = 0.06 million, which is equal to 60,000 top carnivores.
Therefore, the number of top carnivores (in million) supported by the grassland ecosystem would be 3 million (Option A).
1. Trophic levels in a grassland ecosystem:
- Primary producers (plants) are at the first trophic level.
- Herbivores are at the second trophic level.
- Carnivores (including top carnivores) are at higher trophic levels.
2. Energy transfer in an ecosystem:
- Only about 10% of energy is transferred from one trophic level to the next.
- This means that a large number of primary producers are needed to support a smaller number of herbivores and an even smaller number of top carnivores.
3. Calculation:
- If there are 6 million primary producers, and assuming a 10% energy transfer efficiency, the number of herbivores supported would be 6 million / 10 = 0.6 million.
- Similarly, the number of top carnivores supported by the herbivores would be 0.6 million / 10 = 0.06 million, which is equal to 60,000 top carnivores.
Therefore, the number of top carnivores (in million) supported by the grassland ecosystem would be 3 million (Option A).
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In a grassland ecosystem, if the number of primary producers is approx...
In a grassland ecosystem, the pyramid of numbers is upright. If primary producers are approximately 6 million plants, then number of top carnivores must be less than 6 milliion. Hecne, according to the option given, there would be 3 million top carnivores.
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