The threshold amount of soil water below which plants can no longer absorb water is the:
A) field capacity
B) wilting point
C) capillary action
D) surface tension
E) solifluction

Question

Quizplus · Accepted Answer

The wilting point is the threshold amount of soil water below which plants can no longer absorb water. At this point, the plant cells lose turgor pressure and plant growth begins to decline. Field capacity refers to the amount of water held in soil pores after excess water has drained away, and is typically above the wilting point. Capillary action and surface tension refer to the ability of water to move through small pores in soil, and are not directly related to plant water uptake. Solifluction is a process of soil movement in cold environments, and is not related to plant water uptake.

The Threshold Amount of Soil Water Below Which Plants Can