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.Know More
All living things need water to grow. Plants are made up of about 90 percent water and therefore require more water than animals. Water pressure inside a plant is called turgor. Without turgor, the plant wilts and dies. The internal water pressure is created when the plant absorbs water from the ground, up through the stem, to the leaves. The water is needed to create a skeleton for the plant so the plant can remain upright.
Once the water reaches the leaves, photosynthesis occurs during the daylight hours. During photosynthesis, the plant creates food. Without water, the plant could not create the sugar it needs for energy. Water travels up the stem to the leaves, and there, the water is exchanged for carbon dioxide during transpiration. This natural process only occurs when sunlight is present. Transpiration also serves to cool down the plant, much like sweating cools a human being. The water exits the leaves through small holes called stomata.Learn more about Botany
Ideal conditions for a plant will vary by species. For example, the soggy soil that would kill a cactus is a must for bog-loving plants like Venus flytraps.Full Answer >
Sunlight and water both support the production of chemical nutrients inside the cells of a plant. Sunlight is critical in the process during which water molecules are broken apart inside the pigmented cells of the plant. Water also transports the nutrients throughout the plant and supports its structure.Full Answer >
The specific requirements vary, but plants generally need water, nutrients and sunlight to grow. They also need air, appropriate temperatures, space and time to thrive.Full Answer >
While the Sahara desert is a hot and unforgiving place, more than 2,800 species of trees, shrubs and grasses call it home. Most of these plants exist in the northernmost and southernmost reaches of the desert where rainfall is more frequent than the middle of the desert. Central Sahara is home to only around 500 species, most of them trees and shrubs that put down deep root systems to survive.Full Answer >