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WAEC 2024Transport System

The function of the root hair in plants is to

  1. Aabsorb soil water by the process of osmosis.
  2. Bexcrete water and mineral salts by simple diffusion.
  3. Cpurify the soil for the plant.
  4. Dtranslocate manufactured food.

Explanation

Root hair cells are specialized epidermal cells with a large surface area, thin cell walls, and a high solute concentration in their cytoplasm. This creates a water potential gradient, causing water to move from the soil (higher water potential) into the root hair cells (lower water potential) across the partially permeable cell membrane via osmosis.

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