Characteristics of CAM plants are :
(1) Optimum temperature is 35°C.
(2) These have large vacuoles in mesophyll cells.
(3) Enzyme used by them is PEP carboxylase.
(4) These have low productivity.
(5) Their stomata open during night.
Photosynthesis is the process of manufacture of food from carbon dioxide and water in the presence of sunlight and chlorophyll by green plants.
Significance of photosynthesis :
1. It helps in the synthesis of food.
2. Consumption of carbon dioxide and release of oxygen.