Podcast
Questions and Answers
What do food webs represent in an ecosystem?
What do food webs represent in an ecosystem?
- Energy flow
- Feeding relationships between organisms (correct)
- Trophic levels
- Individual organisms
How does energy flow in an ecosystem, according to the text?
How does energy flow in an ecosystem, according to the text?
- In a linear pattern like a food chain
- In a circular pattern
- From the lowest trophic level to the highest trophic levels (correct)
- From the highest trophic level to the lowest trophic levels
Why is energy flow within a food web not a perfect 1:1 conversion?
Why is energy flow within a food web not a perfect 1:1 conversion?
- Due to sunlight availability
- Due to losses from heat, metabolism, or uneaten matter (correct)
- Due to genetic mutations
- Due to evolution
What is the rule of thumb for energy transfer between trophic levels?
What is the rule of thumb for energy transfer between trophic levels?
In the example provided, if a grasshopper has 100 kilojoules of energy, how much energy would be transferred to the robin when the grasshopper is eaten?
In the example provided, if a grasshopper has 100 kilojoules of energy, how much energy would be transferred to the robin when the grasshopper is eaten?
What happens to the remaining energy when 10% is transferred between trophic levels?
What happens to the remaining energy when 10% is transferred between trophic levels?
How does a food web differ from a food chain?
How does a food web differ from a food chain?
Why is it important to understand food webs in an ecosystem?
Why is it important to understand food webs in an ecosystem?
Which organisms typically belong to the highest trophic levels in an ecosystem?
Which organisms typically belong to the highest trophic levels in an ecosystem?
What happens to most of the energy as it moves up trophic levels?
What happens to most of the energy as it moves up trophic levels?
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