Biology
Transpiration Pull
Quick fact
A single tree can move thousands of liters of water through its roots each day, mostly driven by evaporation from its leaves.
Why this is interesting
Have you ever wondered how trees draw water from the ground to their highest leaves? It’s not magic—it’s called transpiration pull.
Read the full explanation
Understanding Transpiration Pull
Transpiration pull works like a pump. Water evaporates from the leaf surface, creating a 'suction' effect that pulls water up through the plant’s vascular system. This process is continuous and essential for nutrient delivery to all parts of the plant.
A deeper explanation
Transpiration pull is driven by the evaporation of water from stomata on leaves. As water escapes, it creates negative pressure (tension) in the xylem vessels, which pulls more water up from the roots. This mechanism is supported by capillary action and root pressure, but transpiration pull is the primary force behind long-distance water transport in plants.