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Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the herbivorous duck get from the aquatic vegetation? aquatic vegetation → herbivorous duck bivalves →sea ducks → bald eagle -> O 500 kg O 5,000 kg O 50,000 kg O 500,000 kg

Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the herbivorous duck get from the aquatic vegetation? aquatic vegetation → herbivorous duck bivalves →sea ducks → bald eagle -> O 500 kg O 5,000 kg O 50,000 kg O 500,000 kg

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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### Unit Test Review #### Question: Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the herbivorous duck get from the aquatic vegetation? **Food Chain:** * Aquatic vegetation → Herbivorous duck → Bivalves → Sea ducks → Bald eagle **Multiple Choice Options:** * 500 kg * 5,000 kg * 50,000 kg * 500,000 kg **Instructions:** Select the answer that correctly represents the amount of energy the herbivorous duck received from the aquatic vegetation. **Interface Controls:** * **Mark this and return:** Allows the student to mark the question to come back to it later. * **Save and Exit:** Saves current progress and exits the quiz. * **Next:** Proceeds to the next question. * **Submit:** Submits the entire quiz for grading. ### Explanation: In a typical food chain, energy transfer efficiency is roughly 10% from one trophic level to the next. This implies that if a bald eagle at the top of the food chain acquires 50 kg of energy: 1. The sea ducks, which the bald eagle preys on, must have transferred that 50 kg at 10% efficiency. 2. Similarly, bivalves, which are consumed by sea ducks, would transfer energy to the sea ducks again at 10% efficiency. 3. The herbivorous duck consumes the bivalves with roughly the same efficiency level. 4. Therefore, to find the original energy from the aquatic vegetation to the herbivorous duck, we have to reverse calculate through the successive 10% energy transfers. This reverse calculation helps determine how much energy was in the aquatic vegetation initially for the herbivorous duck. Thus, the correct answer would be... * \( 50 \, kg \Rightarrow 500 \, kg \Rightarrow 5000 \, kg \Rightarrow 50,000 \, kg \) Hence, the herbivorous duck received **50,000 kg** of energy from aquatic vegetation. **Answer: 50,000 kg**
Transcribed Image Text:### Unit Test Review #### Question: Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the herbivorous duck get from the aquatic vegetation? **Food Chain:** * Aquatic vegetation → Herbivorous duck → Bivalves → Sea ducks → Bald eagle **Multiple Choice Options:** * 500 kg * 5,000 kg * 50,000 kg * 500,000 kg **Instructions:** Select the answer that correctly represents the amount of energy the herbivorous duck received from the aquatic vegetation. **Interface Controls:** * **Mark this and return:** Allows the student to mark the question to come back to it later. * **Save and Exit:** Saves current progress and exits the quiz. * **Next:** Proceeds to the next question. * **Submit:** Submits the entire quiz for grading. ### Explanation: In a typical food chain, energy transfer efficiency is roughly 10% from one trophic level to the next. This implies that if a bald eagle at the top of the food chain acquires 50 kg of energy: 1. The sea ducks, which the bald eagle preys on, must have transferred that 50 kg at 10% efficiency. 2. Similarly, bivalves, which are consumed by sea ducks, would transfer energy to the sea ducks again at 10% efficiency. 3. The herbivorous duck consumes the bivalves with roughly the same efficiency level. 4. Therefore, to find the original energy from the aquatic vegetation to the herbivorous duck, we have to reverse calculate through the successive 10% energy transfers. This reverse calculation helps determine how much energy was in the aquatic vegetation initially for the herbivorous duck. Thus, the correct answer would be... * \( 50 \, kg \Rightarrow 500 \, kg \Rightarrow 5000 \, kg \Rightarrow 50,000 \, kg \) Hence, the herbivorous duck received **50,000 kg** of energy from aquatic vegetation. **Answer: 50,000 kg**
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