Standard Science Primary 5 Systems

A balsam plant was placed in a beaker of blue-coloured water. After two hours, the stem was cut cross-wise. Which part of the stem would appear blue?

A The entire surface of the stem.
B The outer tubes that carry food.
C The central part of the stem only.
D The inner tubes that carry water.
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Worked Solution

Step 1: Roots absorb the blue-coloured water. Step [2-9]: Water is transported upwards through the water-carrying tubes (xylem). Step [2-9]: In a balsam plant, xylem is located in the inner part of the vascular bundles.

Correct answer: The inner tubes that carry water.

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