Carbon dioxide enters the leaf through tiny openings called the stomata. These specialized apertures open during the day to allow for the exchange of carbon dioxide and water in a process known as transpiration. More »

The majority of the carbon dioxide transported through the human bloodstream is in the form of the bicarbonate anion (HCO3-), and it is carried within the red blood cells. A much smaller portion of the bicarbonate anion ... More »

The three inputs of photosynthesis are carbon dioxide, water and sunlight. During photosynthesis, plants used the sun's energy to change water and carbon dioxide into glucose, a carbohydrate energy source. Oxygen, a by-p... More »

A stomata is the part of a plant that allows gases such as oxygen and carbon dioxide to move freely into and out of a leaf. Every plant with above-ground leaves has stomata. More » Science Biology Botany

The lower epidermis contains stomata cells that help prevent water loss and regulate the exchange of gases such as oxygen and carbon dioxide, enabling plants to survive. Other cells in the lower epidermis include a waxy ... More »

The two gases that move in and out of the stomata on plant leaves are carbon dioxide and oxygen. The exchange of these two gases plays a vital role in photosynthesis, which is the process by which plants use light to pro... More »

How Stuff Works explains that water reaches the leaves of plants through the xylem vessels, and it escapes through small holes in the leaf known as stomata. The process by which the water moves from the capillaries to th... More »