Standard Science Primary 5 Systems

Siti observed a cross-section of a plant stem. Which of the following correctly describes the functions of the tubes found in the stem?

A Water-carrying tubes transport water and minerals from roots to all parts of the plant.
B Food-carrying tubes transport water and minerals from leaves to roots.
C Food-carrying tubes transport water from roots to leaves.
D Water-carrying tubes transport food from leaves to roots.
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Worked Solution

Step 1: Identify the two types of tubes in a plant stem: water-carrying (xylem) and food-carrying (phloem). Step 2: Recall their functions. Water-carrying tubes transport water and minerals upwards from the roots. Step 3: Food-carrying tubes transport manufactured food from the leaves to other parts of the plant.

Correct answer: Water-carrying tubes transport water and minerals from roots to all parts of the plant.

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