EcologyAQA GCSE Biology (8461)

Organisation of an Ecosystem

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

Practice progress

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
In a food chain, an arrow always points:
Answer & explanation
Correct: option B
Arrows show energy flow — from the food INTO the feeder.
2
Which organism is most likely the producer in 'grass → rabbit → fox'?
Answer & explanation
Correct: option C
Producers photosynthesise — grass.
3
In a typical predator–prey cycle:
Answer & explanation
Correct: option C
There's a time lag — predators respond to abundant prey by breeding up, so peak later.
4
Which is most likely an apex predator in the UK?
Answer & explanation
Correct: option A
Peregrine falcons have no natural predators (apart from humans) and sit at the top of UK bird food chains.
5
A food web is more stable than a single food chain because:
Answer & explanation
Correct: option B
Webs offer alternative routes; if one species is lost others can compensate, so the community is more resilient.

EcologyAQA GCSE Biology (8461)

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
In a food chain, an arrow always points:
Answer & explanation
Correct: option B
Arrows show energy flow — from the food INTO the feeder.
2
Which organism is most likely the producer in 'grass → rabbit → fox'?
Answer & explanation
Correct: option C
Producers photosynthesise — grass.
3
In a typical predator–prey cycle:
Answer & explanation
Correct: option C
There's a time lag — predators respond to abundant prey by breeding up, so peak later.
4
Which is most likely an apex predator in the UK?
Answer & explanation
Correct: option A
Peregrine falcons have no natural predators (apart from humans) and sit at the top of UK bird food chains.
5
A food web is more stable than a single food chain because:
Answer & explanation
Correct: option B
Webs offer alternative routes; if one species is lost others can compensate, so the community is more resilient.