 Some bromeliads have also developed an adaptation known as the tank habit, which involves them forming a tightly bound structure with their leaves that helps to capture water and nutrients in the absence of a well-developed root system.Bromeliads also use crassulacean acid metabolism (CAM) photosynthesis to create sugars.This adaptation allows bromeliads in hot or dry climates to open their stomates at night rather than during the very day, which reduces water loss.