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 the xylem vessels and into the stomata is called transpiration. Plants absorb water through their roots, which contain capillaries. The capillaries are responsible for sending water through the xylem vessels.Continue Reading
According to the BBC, many plants contain 90 to 95 percent water. Since plants are made up of mostly water, they are dependent on it to stay alive. Water is responsible for the regulation of temperature in plants and for the transportation of nutrients throughout the plant. Plants receive water from rainfall, dew and natural and man-made irrigation systems in order to survive.
Green plants use water for photosynthesis. Photosynthesis allows plants to produce the sugar which they need for food. Plants are also dependent on water to support their physical structures. During the process of osmosis, which is the movement of water from the outside of a plant's cells to the inside of the cells, the plant's cell wall receives the structural support that it requires, according to How Stuff Works.Learn more about Botany
Plants need water to grow because plants require internal water pressure to strengthen the stems and leaves, and plants need water to create energy. Water is also necessary for photosynthesis, which occurs in the plant's leaves with water from the stem.Full Answer >
The process of transpiration is when water moves through plants from the roots to the leaves, then changes to vapor as it leaves the plant. Transpiration cools the plant and also provides it with nutrients, carbon dioxide and water.Full Answer >
Aquatic plants are able to absorb the carbon dioxide (CO2) they need to make food directly from the water around them through their leaves, just as land plants obtain carbon dioxide from the air. The water provides the nutrients necessary for an aquatic plant to "breathe" underwater.Full Answer >
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.Full Answer >