Standard Science Primary 6 Interactions

Which of the following describes a structural adaptation of a desert plant to reduce water loss?

A Having leaves modified into spines.
B Having a thick, waxy stem to store water.
C Having broad leaves to capture more sunlight.
D Growing deep roots to reach underground water.
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Worked Solution

Step 1: Water loss occurs through stomata on leaves. Step [2-9]: Spines have very small surface areas compared to leaves. Step [2-9]: Modifying leaves into spines significantly reduces the rate of transpiration.

Correct answer: Having leaves modified into spines.

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