Energy Flows (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What makes an ecosystem an open system?
What makes an ecosystem an open system?
It exchanges both energy and materials
How does energy flow differ from material flow in ecosystems?
How does energy flow differ from material flow in ecosystems?
Energy follows a one-way path; lost as heat
What percentage of incoming sunlight is captured by plants through photosynthesis?
What percentage of incoming sunlight is captured by plants through photosynthesis?
Less than 2%
Why are producers also called autotrophs?
Why are producers also called autotrophs?
They manufacture their own food
Which organisms are secondary consumers?
Which organisms are secondary consumers?
Carnivores that eat herbivores like foxes
What critical role do decomposers play in ecosystems?
What critical role do decomposers play in ecosystems?
Create cyclic exchange of materials
Where does most energy consumed by herbivores go?
Where does most energy consumed by herbivores go?
Maintenance for respiration and body function
Why are carnivore populations typically smaller than herbivore populations?
Why are carnivore populations typically smaller than herbivore populations?
Not enough energy available for predators
What does biomass represent in an ecosystem?
What does biomass represent in an ecosystem?
Stored energy in living tissue
In grassland ecosystems, what happens to most plant energy?
In grassland ecosystems, what happens to most plant energy?
Goes to decomposers eventually