Standard Science Primary 3 Cycles

Why does a cockroach nymph need to shed its skin several times as it grows?

A To change its body color.
B To help it breathe better.
C To protect itself from predators.
D Its hard outer skin does not grow with its body.
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Worked Solution

Step 1: Cockroaches have an exoskeleton (hard outer skin). Step 2: This skin is rigid and cannot expand. Step 3: To increase in size, the nymph must shed the old skin (moulting).

Correct answer: Its hard outer skin does not grow with its body.

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