How does spirogyra respire?

Spirogyra, a filamentous green alga, primarily relies on photosynthesis for energy, but it also engages in cellular respiration. During the day, it uses sunlight to convert carbon dioxide and water into glucose and oxygen through photosynthesis. At night or in the absence of light, spirogyra performs aerobic respiration, breaking down glucose to produce energy, carbon dioxide, and water. This dual mechanism allows spirogyra to thrive in various environmental conditions.