How does Beavertail Cactus obtain food and derive energy from its food?

Beavertail cactus (Opuntia basilaris) primarily obtains food through photosynthesis, a process where it uses sunlight to convert carbon dioxide and water into glucose and oxygen. The cactus has specialized flat pads that contain chlorophyll, allowing it to capture sunlight effectively. The glucose produced during photosynthesis serves as an energy source for growth and metabolic functions. Additionally, the cactus stores water and nutrients in its fleshy tissues, enabling it to thrive in arid environments.