Advanced Science Primary 3 Cycles

Why do nymphs of cockroaches need to moult?

A To allow their bodies to grow bigger.
B To help them move faster.
C To protect themselves from predators.
D To change their body covering.
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Worked Solution

Step 1: Nymphs have a hard outer covering (exoskeleton) that does not grow. Step 2: To increase in size, they must shed this covering. Step 3: This process is called moulting.

Correct answer: To allow their bodies to grow bigger.

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