Standard Science Primary 5 Systems

A plant was placed in a beaker containing red-coloured water. After 5 hours, the flowers of the plant turned red. Which part of the stem was responsible for this?

A The bark of the stem.
B The water-carrying tubes.
C The food-carrying tubes.
D The outer layer of the stem.
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Worked Solution

Step 1: Roots absorb water from the beaker. Step 2: Water travels up the stem through the xylem (water-carrying tubes). Step 3: The red dye travels with the water to the petals. Step 4: Therefore, xylem is responsible.

Correct answer: The water-carrying tubes.

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