A plant is a living organism that grows on the earth and is usually rooted in the ground or lives in water. Plants come in many different shapes, sizes, and colors, but they all need air, water, nutrients, and sunlight to live. They are not able to move around and their cells have stiff walls made of a tough material called cellulose. All green plants use the Sun’s energy, water, and a gas called carbon dioxide to make their own food through a process called photosynthesis.
Plants are vital to life on Earth as they provide food for people and animals, and they also make the oxygen that other living things breathe. They produce the oxygen as part of the process of photosynthesis. Human beings use plants in countless ways. They get many foods, drinks, and flavorings from plants. They build homes from wood and many other parts of plants. People also burn wood for heat and energy. Many of the fibers used to make cloth come from plants, especially cotton. Other useful things made from plants include medicines, paper, and fuel.
The basic parts of a plant include a stem, leaves, and roots. Plants reproduce by seeds, spores, or runners. Some plants are so tiny that people can hardly see them, while others are trees that grow as tall as skyscrapers. Most plants grow in soil and get the water and nutrients they need from the soil, but some plants do not need soil. Plants called epiphytes grow on hard surfaces, such as other plants or rocks, and they get most of the water and nutrients they need from rain and the air. Still, other plants float in water, and a few species of plant live on and get their nutrients from other plants.
In summary, a plant is a living organism that grows on the earth and is vital to life on Earth. They come in many different shapes, sizes, and colors, but they all need air, water, nutrients, and sunlight to live. Plants reproduce by seeds, spores, or runners, and they have basic parts such as a stem, leaves, and roots.