Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose (sugar) and oxygen. It involves the absorption of light energy by chlorophyll in the chloroplasts of plant cells to produce glucose, which is used as an energy source for the organism.
Photosynthesis does not directly involve methane. It is a process by which plants, algae, and some bacteria convert carbon dioxide and water into glucose using sunlight. Methane is a different compound produced by microorganisms in anaerobic conditions.
Cellular respiration and photosynthesis are interconnected processes that support life on Earth. Photosynthesis occurs in plants, converting sunlight, carbon dioxide, and water into glucose and oxygen, while cellular respiration occurs in both plants and animals, breaking down glucose to produce energy, carbon dioxide, and water. The oxygen released during photosynthesis is used in cellular respiration, and the carbon dioxide produced in cellular respiration is utilized in photosynthesis, creating a cyclical exchange of materials and energy. Together, these processes maintain the balance of oxygen and carbon dioxide in the atmosphere.