Multiple choice

Which type of water is available to plants for use?

  1. Gravitational water

  2. Hygroscopic water

  3. Combined water

  4. Capillary water

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

Capillary water is held in soil pores by surface tension and is the primary water source available to plant roots. Gravitational water drains away, hygroscopic water is too tightly bound to soil particles, and combined water is chemically bound in minerals.