Their adaptation to drier areas

Xerophytes have several adaptations to survive in dry areas:

1. Reduced surface area to volume ratio: This minimizes water loss through transpiration. Examples include small leaves, spines instead of leaves (like in cacti), or leaves that roll up.
2. Thick, waxy cuticle: A waxy layer on the surface of leaves and stems prevents excessive water evaporation.
3. Sunken stomata: Stomata (pores for gas exchange) are often located in pits or grooves, creating a humid microenvironment that reduces water loss.
4. Water storage tissues (succulence): Many xerophytes have fleshy stems or leaves that store water, allowing them to survive long dry periods.
5. Extensive root systems: They develop either deep taproots to reach groundwater or widespread shallow roots to quickly absorb surface moisture after infrequent rain.