Multiple choice

The soil water available to plants is:

  1. capillary water

  2. chemically bound water

  3. gravitational water

  4. hygroscopic water

  5. none of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Capillary water is the water held in soil pores against gravity by surface tension, and it is the main source of water available to plant roots. Gravitational water drains away quickly, hygroscopic water is tightly bound to soil particles, and chemically bound water is unavailable to plants.