Primary 3 Science — Cycles Practice | Standard

Standard Science Primary 3 Cycles

Why does the nymph of a cockroach need to moult several times?

A To protect itself from predators.

B To change its body colour.

C To allow its body to grow larger.

D To help it find more food.

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Worked Solution

Step 1: Insects have a hard outer covering called an exoskeleton. Step 2: This covering does not grow with the insect. Step 3: The insect must shed the old skin (moult) to allow a larger body to develop.

Correct answer: To allow its body to grow larger.

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