AP BIOLOGY

Detailed explanation-1: -Cacti utilize CAM photosynthesis, a process unique to succulents. In CAM photosynthesis, stomata open only at night when the plant is relatively cool, so less moisture is lost through transpiration.

Detailed explanation-2: -Some plants that are adapted to dry environments, such as cacti and pineapples, use the crassulacean acid metabolism (CAM) pathway to minimize photorespiration. This name comes from the family of plants, the Crassulaceae, in which scientists first discovered the pathway.

Detailed explanation-3: -Sedum, Kalanchoe, Pineapple, Opuntia, Snake plant are the examples of CAM plants. These plants also perform double carbon dioxide fixation.

Detailed explanation-4: -C4 plants are typically summer plants like corn and sugar cane. They can sustain high heat and reduced water supply to some extent. On the other hand, CAM plants are better suited for arid environments like deserts. Cacti and aloe vera are two CAM plants.