Continued from page 01 SO, how does that happen? Plants need sunlight for photosynthesis that in turn helps them produce oxygen, but at night, certain plants undergo Crassulacean Acid Metabolism or CAM photosynthesis to produce oxygen.

u201c At night, only respiration occurs in plants, i. e. inhaling oxygen and releasing carbon dioxide. However, some studies have shown that photosynthesis in some plants occurs at night as well. This process is called Crassulacean Acid Metabolism ( CAM), which primarily occurs in desert plants that live off other plants. The plants that undergo CAM have been used in the oxygen hub at the Hanging Gardens [ also known as Pherozeshah Mehta Gardens],u201d said Sagar Doiphode, horticulture assistant, Malabar Hill Reservoir Garden, Hydraulic Engineering Department.