17 Questions
What is the main purpose of a food web in an ecosystem?
To represent all of the food chains within the ecosystem
How does energy flow through an ecosystem according to the text?
In a linear manner from producers to quaternary consumers
Why is energy flow within a food web described as interconnected?
Due to the complex feeding relationships between organisms
What rule of thumb describes the energy transfer between trophic levels?
$10 %$ of energy is transferred between trophic levels
If a grasshopper has 200 kilojoules of energy and is eaten by a robin, how much energy would be transferred to the robin based on the 10% rule?
20kj of energy
Why is only 10% of the energy transferred between trophic levels?
Due to losses such as heat, metabolism, or unconsumed matter
What happens to the remaining energy when 10% is transferred between trophic levels?
$90 %$ is typically lost due to various factors
How does a food web differ from a food chain?
A food web shows multiple interconnected feeding relationships while a food chain shows just one linear path
Why is it important to understand food webs in an ecosystem?
$Because it helps understand how energy flows and cycles within ecosystems$
What do food webs represent in an ecosystem?
All the food chains within an ecosystem
How is energy transferred between organisms in a food web?
10% from one trophic level to the next
What is the primary reason for the 10% energy transfer rule between trophic levels?
To account for energy lost as heat and metabolism
Why is the energy flow within a food web described as complex?
Energy can flow between different food chains
If a rabbit consumes 400 kilojoules of energy from vegetation, how much energy would be transferred to a wolf that eats the rabbit, following the 10% rule?
40 kilojoules
What happens to the remaining 90% of energy that is not transferred to the next trophic level?
It is lost as heat, through metabolism, or left behind as unconsumed matter
How does a food web differ from a food chain?
A food web includes multiple interconnected food chains
What is the significance of understanding energy flow within an ecosystem using food webs?
To comprehend how energy sustains life in ecosystems
Learn about ecosystems as the complex interactions of organisms within an area and how food chains represent feeding interactions. Explore how organisms obtain energy through feeding and how this is illustrated in different ecosystems like a freshwater lake.
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