What are plants
Plants are one of the five main groups of living things. These group are called kingdoms. The plant kingdom includes such living things as grasses, trees, ferns, bushes, and flowers. Botanist, the scientist who study plants, have counted more than 260.000 species ( kinds ) of plants.
Plants vary greatly in size and shape. Some plants are so small they can hardly be seen. Other plants tower above the land. The giant sequoia trees of california are one of the largest living things on earth. They can grow to heights of nearly 212 feet ( 83 kilometers )
Just like animals, plants are made up of tiny structure called cells. But, unlike animal cells, plant cells are surrounded by a stiff material called cellulose . most animals move around and eat other things. Plants are different. Plants that grow on land usually stay in one place and make their own food.
Most plants are green because they have green chemical called chlorophyll. Plants are different from mushrooms and other fungi . fungi do not have chlorophyll.
What are the main kinds of plants ? almost all the members of the plant kingdom are seed plants. They grow from seeds. Most seed plants are flowering plants, or angiosperms.
But there are some groups of plants that do not grow from seeds. Bontanist call these groups bryophytes, ferms, lyophiles and horsetails.
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