ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it is left behind in the inedible parts
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it is used for metabolic processes or given off to the environment as heat
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It is processed into fossil fuels
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it is used eaten
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Detailed explanation-1: -The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
Detailed explanation-2: -At each step up the food chain, only 10 percent of the energy is passed on to the next level, while approximately 90 percent of the energy is lost as heat.
Detailed explanation-3: -The ten percent rule states that each trophic level can only give 10% of its energy to the next level. The other 90% is used to live, grow, reproduce and is lost to the environment as heat. All energy pyramids start with energy from the Sun which is transferred to the first trophic level of producers.
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: -At each stage of a food chain, most of the chemical energy is converted to other forms such as heat, and does not remain within the ecosystem.