Advanced Science Primary 5 Systems

Alexa placed a white celery stalk in a beaker of red-colored water. After one day, the leaves turned red. What does this experiment prove?

A The food-carrying tubes transport water to the leaves.
B The leaves make red food during photosynthesis.
C The roots absorb the red color from the air.
D The water-carrying tubes transport water from the stem to the leaves.
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Worked Solution

Step 1: The colored water was absorbed and traveled up the stem. Step 2: Water is transported by the water-carrying tubes (xylem). Step 3: The red color in the leaves proves that water moves upwards from the stem to the leaves.

Correct answer: The water-carrying tubes transport water from the stem to the leaves.

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