Plant Transport Systems
Plants are basically living plumbing systems with two main "pipes" doing completely different jobs. Xylem tissue acts like a one-way escalator, carrying water and minerals from the roots straight up to the leaves. Meanwhile, phloem tissue works like a two-way motorway, transporting sugars from leaves to anywhere in the plant that needs energy.
The whole process kicks off with transpiration - water constantly evaporating from leaf surfaces. As water escapes through tiny pores called stomata, it creates a pulling effect that draws more water up through the xylem vessels from the roots.
Several factors speed up transpiration rates. Higher temperatures make water evaporate faster, whilst dry or windy conditions also increase water loss. Bright light opens stomata wider for photosynthesis, which means more water can escape.
Quick Tip: Think of transpiration like a plant "sweating" - the more extreme the conditions, the more water it loses!
