Advanced Science Primary 6 Interactions

In a food chain: Hibiscus → Caterpillar → Small Bird → Hawk. If the population of hawks decreases significantly, what is the most likely immediate effect on the Hibiscus plant?

A The population of Hibiscus will remain the same.
B The population of Hibiscus will decrease.
C The population of Hibiscus will increase.
D The Hibiscus will start eating caterpillars.
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Worked Solution

Step 1: Fewer hawks means more small birds. Step [2-9]: More small birds will eat more caterpillars. Step [2-9]: Fewer caterpillars means less damage to the hibiscus, wait—let's re-evaluate. Correct Logic: Fewer hawks -> More small birds -> Fewer caterpillars -> More Hibiscus. Wait, let's look at the options. If the population of birds increases, caterpillars decrease. If caterpillars decrease, Hibiscus INCREASES. My answer was wrong. Correction: The Hibiscus population will increase.

Correct answer: The population of Hibiscus will decrease.

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