Why do cacti need a stomata to live in the tropical rainforest?

Cacti typically do not live in tropical rainforests; they are adapted to arid environments. However, if they were to exist in such a habitat, stomata would still be essential for gas exchange, allowing them to take in carbon dioxide for photosynthesis while minimizing water loss. In a humid rainforest, the stomata could help regulate their internal water balance and adapt to varying moisture levels. Overall, stomata play a critical role in plant survival by facilitating essential physiological processes.