Multiple choice Transpiration cools leaf surfaces sometimes ..........by evaporative cooling 0 to 5 degrees 5 to 10 degrees 15 to 20 degrees 10 to 15 degrees Reveal answer Fill a bubble to check yourself D Correct answer Explanation Transpiration is an evaporative process that consumes heat energy, which effectively cools the leaf surface by approximately 10 to 15 degrees Celsius.