Cambridge IGCSE Biology practice

Paper 3 structured question: Food chains and food webs

Try the question first, then check the answer and practise the same topic again.

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Paper

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Topic

Food chains and food webs

Exam-style question

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Paper 3Theory (Core)2 marks

In a pond ecosystem, the following food chain exists: Algae → Small fish → Large fish

Diagram Description

The diagram shows algae eaten by small fish, which are then eaten by large fish.

a
State the role of algae in this food chain.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Identify the secondary consumer in this food chain.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)2 marks

Diagram Description

The diagram shows a food chain starting with grass, eaten by a grasshopper, which is eaten by a frog, which is then eaten by a snake.

a
State the producer in this food chain.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Identify the primary consumer in this food chain.
Your answer
Aim for approximately 1 distinct marking point.
[1]