ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All energy is transferred to each level of a food web.
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Energy flows from producers to one or more levels of consumers.
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Consumers transfer their energy to producers.
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Decomposers get their energy directly from the sun.
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Detailed explanation-1: -The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants. A small proportion of this chemical energy is transformed directly into heat when compounds are broken down during respiration in plants.
Detailed explanation-2: -(4) Energy is transferred to consumers, which use it to produce food. The correct answer is 3. A food web shows how energy is transferred in an ecosystem. For instance, the solar energy is transferred to the producers such as plants so that they can convert it into chemical energy.
Detailed explanation-3: -Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.
Detailed explanation-4: -In a food chain, energy flows from the producers to the consumers and then to the decomposers. Consumers can eat strictly producers or plants or they can eat both other consumers and producers or they can eat strictly other consumers. The decomposers get their energy from dead and decaying consumers.