The major source of water used by plants is
-
capillary water
-
hygroscopic water
-
gravitational water
-
inner space water
A
Correct answer
Explanation
Capillary water is the water held in soil pores against gravity but available for plant absorption. It's the primary water source plants use through their roots. Hygroscopic water is too tightly bound, gravitational water drains away quickly, and 'inner space water' is not a standard scientific term.