What process do plants use to release oxygen and water vapor into the atmosphere?

The process that plants use to release oxygen and water vapor into the atmosphere is known as transpiration. Transpiration primarily occurs through tiny openings on the leaves called stomata.

During transpiration, plants absorb water from the soil through their roots, which then travels up the stems to the leaves. In the leaves, water moves from the inside of the plant to the outside environment via evaporation. This process not only helps in cooling the plant but also creates a negative pressure that aids in drawing more water from the roots, thus facilitating nutrient transport.

While photosynthesis does result in the release of oxygen, it is specifically the conversion of carbon dioxide and water into glucose and oxygen using sunlight. Respiration, on the other hand, involves the conversion of glucose back into energy and consumes oxygen rather than releasing it. Evaporation refers to the process of liquid water turning into vapor without the involvement of plant processes. The unique functionality of transpiration makes it crucial for maintaining plant health and regulating water in the atmosphere.