SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because as energy moves from the bottom to the top level, less and less energy is available to higher levels.
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Because the original energy from producers is the total energy available to all the organisms in the energy pyramid.
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because only about ten percent of the energy available at one level is transferred to the next level.
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all of the above
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Detailed explanation-1: -Why are there less number of organisms at the top of the ecological pyramid ? There are less number of organisms at the top of the pyramid because there is very little food left for secondary consumers compared to the primary consumers. Similarly, there are fewer consumers than producers.
Detailed explanation-2: -Why can’t the top level contain a large number of organisms? Because as energy moves from the bottom to the top level, less and less energy is available to higher levels.
Detailed explanation-3: -The number of organisms at each level decreases relative to the level below because there is less energy available to support those organisms. The top level of an energy pyramid has the fewest organisms because it has the least amount of energy.
Detailed explanation-4: -Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.
Detailed explanation-5: -The energy level is maximum at the organisms occupying the base of the energy pyramid i.e., the producers and they are the most numerous organisms, while the consumers occupying the higher levels have less energy. As energy content keeps on decreasing so the number of organisms also decrease, at higher levels.