Home › MHT-CET › Biology › Plant Water Relations › Why does **rate of transpiration increase** with…
Why does **rate of transpiration increase** with rising temperature, low humidity, and wind?
ABecause stomata physically expand with heat
BHigher temperature increases evaporation rate; low humidity steepens the vapour gradient; wind disperses the saturated air layer near leaf
CLower humidity closes stomata
DWind closes stomata
Answer & Solution
Correct answer: B. Higher temperature increases evaporation rate; low humidity steepens the vapour gradient; wind disperses the saturated air layer near leaf
All three factors increase the vapour pressure deficit between leaf interior (saturated air at ~stomatal substomatal cavity) and atmosphere — driving faster water-vapour loss. Note: at very high temperatures stomata may close, but at moderate increases, transpiration rate goes up.
Related questions
Loss of water as **vapour** (transpiration) is highest in which type of tissue/structure oWhich plant has **epistomatic** leaves (stomata only on upper surface)?**Symplast pathway** of water movement involves:If a plant cell has OP = 12 atm and TP = 4 atm, its **DPD** is:**Aquaporins** are:The **pressure-flow hypothesis** (Münch, for phloem transport) proposes that:The **major channel** for translocation of food (sucrose) in plants is:**Active absorption** of water by roots involves: