Cacti

Cacti have developed methods to store water due to living in dry, arid regions. Cacti absorb water through their roots and store it in their stems when it rains. Cacti provide food through their leaves and fruits, water through their stems, and shelter from desert heat to organisms. The Saguaro cactus is a keystone species in the Sonoran desert, being a primary source of food, habitats, and water among organisms.