OBJECTIVE LIFE SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The size of the individual organisms
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Competition between organisms
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The loss of energy between trophic levels
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Natural selection
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Detailed explanation-1: -Energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from its prey’s body. However, these transfers are inefficient, and this inefficiency limits the length of food chains.
Detailed explanation-2: -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-3: -Most of the food chains are limited to four or five trophic levels. This is because at each trophic level some amount of energy is lost as heat. All the energy is not transferred to the next trophic level. Hence, with increasing trophic levels the amount of energy decreases.