Standard Science Primary 6 Interactions

In a garden food web, if the population of birds (predators) suddenly decreases, what is the most likely immediate effect on the caterpillars (prey)?

A The caterpillars will start eating the birds.
B The caterpillar population will decrease.
C The plants will grow faster.
D The caterpillar population will increase.
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Worked Solution

Step 1: Identify the relationship (Birds eat Caterpillars). Step [2-9]: If the predator population decreases, there is less predation pressure. Step [2-9]: Therefore, more caterpillars survive and their population increases.

Correct answer: The caterpillar population will increase.

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