Water is prevented from reaching the ground by vegetation. What is this process called?

Water is prevented from reaching the ground by vegetation. What is this process called?

• A. Infiltration
• B. Precipitation
• C. Condensation
• D. Interception

Answer: (D)

Interception is when rainfall is caught by vegetation—on leaves, branches, and stems—and kept from reaching the ground immediately. Water stored on plant surfaces can evaporate back into the air or later reach the ground as throughfall or stemflow. This delays and reduces the amount of water that infiltrates the soil and can alter runoff patterns. The other terms describe different steps: infiltration is water entering the soil, precipitation is the rainfall itself, and condensation is moisture turning into liquid in the air, not the blocking of rainfall by plants.

Interception is when rainfall is caught by vegetation—on leaves, branches, and stems—and kept from reaching the ground immediately. Water stored on plant surfaces can evaporate back into the air or later reach the ground as throughfall or stemflow. This delays and reduces the amount of water that infiltrates the soil and can alter runoff patterns. The other terms describe different steps: infiltration is water entering the soil, precipitation is the rainfall itself, and condensation is moisture turning into liquid in the air, not the blocking of rainfall by plants.