From xylem to the air spaces in a leaf, water moves along a gradient of ………………….... water potential, a gradient maintained by in the leat.

Explanation

To answer the question, "From xylem to the air spaces in a leaf, water moves along a gradient of ………………….... water potential, a gradient maintained by in the leaf," we can break down the solution into the following steps:

### Step 1: Understand Water Potential
Water potential is a measure of the potential energy in water, and it determines the direction of water movement. Water moves from areas of higher water potential to areas of lower water potential.

**Hint:** Remember that water potential is influenced by solute concentration and pressure.

### Step 2: Identify the Source and Destination
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