Standard Science Primary 5 Systems

Siti observed that a plant died after its outer ring of bark was removed. Which of the following explains why?

A The plant could not transport food from the leaves to the roots.
B The plant could not absorb mineral salts from the soil.
C The plant could not perform photosynthesis.
D The plant could not transport water from the roots.
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Worked Solution

Step 1: The outer ring of bark contains the phloem (food-carrying tubes). Step 2: Removing the phloem prevents food made in the leaves from reaching the roots. Step 3: The roots eventually die from lack of food, causing the whole plant to die.

Correct answer: The plant could not transport food from the leaves to the roots.

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