HORTICULTURE

Detailed explanation-1: -During the day, there is a higher requirement of carbon dioxide as it is the reagent used for photosynthesis giving out oxygen as the product. This is why plants release oxygen during the day when photosynthesis occurs as the production exceeds the amount of oxygen required by respiration.

Detailed explanation-2: -Plants produce oxygen as a waste product of making sugar using sunlight, carbon dioxide, and water. If a plant needs energy, but doesn’t have sunlight, then it can burn the sugar that it made back when it had sunlight, and doing so requires oxygen.

Detailed explanation-3: -During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Detailed explanation-4: -Energy consumption by cellular respiration Interestingly, this process also uses oxygen in the same way as humans use oxygen for breathing. Fortunately, photosynthesis also uses CO2 and produces 10 times more oxygen, so plants create much more oxygen than they use. And that’s a good thing.