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CIE iGCSE Co-Ordinated Science B3.3 Active transport Exam Style Questions Paper 1

Question

What is a main function of root hairs?

A. absorb mineral ions
B. photosynthesis
C. support the stem
D. transport water to the leaves

▶️ Answer/Explanation
Root hairs are specialised cells that greatly increase the surface area for absorption of water and mineral ions from the soil. They do not photosynthesise (no chloroplasts), they do not provide support, and water transport to leaves is the function of xylem, not root hairs directly.
Answer: (A)
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