Energy Flow in Ecosystems
Biology ⇒ Ecology and Environment
Energy Flow in Ecosystems starts at 7 and continues till grade 12.
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See sample questions for grade 8
Describe the difference between a food chain and a food web.
Describe the role of sunlight in the energy flow of an ecosystem.
Describe what happens to the amount of available energy as you move up the trophic levels in an ecosystem.
Explain why energy cannot be recycled in an ecosystem.
Explain why food chains usually have no more than four or five trophic levels.
Explain why only about 10% of energy is transferred from one trophic level to the next.
If a food chain is: Algae → Small Fish → Large Fish → Bird, which organism is the secondary consumer?
If a grassland ecosystem receives 10,000 units of energy from the sun, approximately how much energy is available to primary consumers?
If a secondary consumer eats a primary consumer that has 500 units of energy, how much energy does the secondary consumer receive?
In a forest ecosystem, if the population of primary consumers decreases, what is likely to happen to the population of producers?
In an energy pyramid, which level has the greatest amount of energy?
What is a food web?
What is the main source of energy for most ecosystems?
What is the role of decomposers in the energy flow of an ecosystem?
What would happen to an ecosystem if all the decomposers were removed?
Which group of organisms is responsible for converting solar energy into chemical energy?
Which level in a food chain receives the least amount of energy?
