Standard Science Primary 5 Systems

Which of the following is the main function of stomata in a leaf?

A To transport food to the roots
B To allow gaseous exchange
C To absorb sunlight for photosynthesis
D To protect the leaf from insects
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Worked Solution

Step 1: Stomata are tiny openings found mainly on the underside of leaves. Step 2: They allow carbon dioxide to enter and oxygen/water vapour to leave. Step 3: This process is called gaseous exchange.

Correct answer: To allow gaseous exchange

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