A plant is a multicellular organism that is a member of the Plantae kingdom. Green plants use the photosynthesis process to create energy. Photosynthesis converts carbon dioxide and water into sugar and oxygen using sunlight. The basic needs for a plant to grow are water, soil and sunlight. Some plants don’t grow in the soil, but on rocks or other objects. Plants produce oxygen through the photosynthesis process, a vital element for life on Earth.

There are around 230,000 plant species on our planet and there are estimates that there could be tens of thousands more that have yet to be discovered and described. Plants are found on every continent, including Antarctica. Plants are found deep in the ocean, in dry deserts, high in the mountains and virtually everywhere else you can think of. Terrestrial plants (land) started to appear around 450 million years ago.

Plants are important to humans. They produce oxygen, which is vital to the human body. Many plants can be consumed by humans. Vegetables, fruits and other plant parts are commonly eaten by humans. Plants are a source of building materials. Humans harvest wood from trees to build structures, like a house. Plants help remove carbon dioxide from our atmosphere through the photosynthesis process. Without plants, humans and most other organisms on our planet wouldn’t be alive today.