Multiple choice

Transpiration would be the lowest when

  1. wind velocity is high

  2. water is sufficient in the soil

  3. atmospheric RH is high

  4. temperature is high

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

Transpiration rate is inversely proportional to relative humidity (RH). High humidity reduces the vapor pressure gradient between the leaf interior and the atmosphere, slowing down transpiration.