What Producers like this plant take in oxygen and release carbon dioxide during what?

Producers like plants take in oxygen and release carbon dioxide during the process of cellular respiration. While they primarily use photosynthesis to convert carbon dioxide and sunlight into oxygen and glucose, cellular respiration occurs in their cells to break down glucose for energy, resulting in the release of carbon dioxide as a byproduct. This process happens continuously, even at night when photosynthesis ceases.