Plant Transport & Transpiration

stomata open — the transpiration pull100 %

humidity of the air outside the leaf50 % RH

cohesion — hydrogen bonds between the water molecules adhesion — water clinging to the vessel wall cut the column — an air embolism in the vessel

light50 %

temperature20 °C

windstill air

humidity50 % RH

run	light	temp	wind	humidity	time	distance	volume	rate
No runs recorded yet — set the conditions, press play, then record the run.

light (and low CO₂ inside the leaf) — drives K⁺ uptake50 %

abscisic acid (ABA) — water stress: K⁺ leaves and the stomata close

sucrose loading at the source — active transport50 %

aphid stylet — sap under pressure exudes from a cut stylet ringing — a ring of bark (with the phloem) removed

the transpiration stream — pulled from the top, not pushed from the bottom