Standard Science Primary 6 Interactions

Study the food chain: Plant → Caterpillar → Small Bird → Hawk. Which of the following statements is correct if the population of small birds decreases?

A The hawk population will increase.
B The hawk population will stay the same.
C The caterpillar population will decrease.
D The plant population will decrease.
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Worked Solution

Step 1: Fewer small birds mean fewer predators for caterpillars. Step [2-9]: The caterpillar population will increase. Step [2-9]: More caterpillars will eat more plants, causing the plant population to decrease.

Correct answer: The plant population will decrease.

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