Osmoregulation
All plants regulate their water balance. Xerophytes like cacti keep water inside so they do not become too salty. Plants that live in seasonal wetlands also have ways of avoiding desiccation. Many plant leaves have a waterproof cuticle to regulate the loss of water, and use spiracles for gas exchange. Osmoregulation is an important aspect of homeostasis. it involves the balance between water and solute contents of cells.