Four friends were arguing about the flow of energy between organisms in a food chain. They wondered what happened to the stored energy in the grass plant as one organism eats another in a food chain relationship. This is what they said: Tatyana: "I think most of the plant's energy ended up in the eagle." Molly: "I think most of the plant's energy ended up in the snake." Amos: "I think most of the plant's energy ended up in the grasshopper." Ursula: "I think the amount of energy that was in the plant stayed the same when it passed through the organism in the food chain. Which student do you most agree with? __ Explain why you agree.

Question

Four friends were arguing about the flow of energy between organisms in a food chain. They wondered what happened to the stored energy in the grass plant as one organism eats another in a food chain relationship. This is what they said: Tatyana: "I think most of the plant's energy ended up in the eagle." Molly: "I think most of the plant's energy ended up in the snake." Amos: "I think most of the plant's energy ended up in the grasshopper." Ursula: "I think the amount of energy that was in the plant stayed the same when it passed through the organism in the food chain. Which student do you most agree with? __ Explain why you agree.

Answer 1

I most agree with Amos.Amos's statement that most of the plant's energy ended up in the grasshopper aligns with the principle of energy transfer in a food chain. Only a small fraction of energy is transferred to higher trophic levels (e.g., snake, eagle), with significant energy loss at each step.

Answer 2

In a food chain, energy transfer between trophic levels is inefficient. Typically, only about 10% of the energy is passed on to the next level, while the rest is lost as heat, used for metabolic processes, or remains in undigested parts. Therefore, the majority of the plant's energy is used or lost before reaching higher trophic levels.

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