plant

organism
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External Websites
  • University of California Museum of Paleontology - Introduction to the Plantae
  • The Canadian Encyclopedia - Plant
  • NeoK12 - Educational Videos and Games for School Kids - Plant
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Articles from Britannica Encyclopedias for elementary and high school students.
  • plant - Children's Encyclopedia (Ages 8-11)
  • plant - Student Encyclopedia (Ages 11 and up)
Alternative Titles: Embryophyta, Metaphyta, Plantae
Below is the full article. For the article summary, see plant summary.

plant, (kingdom Plantae), any multicellular weeping willow tree

weeping willow tree
Weeping willow (Salix babylonica).
J.L. Watcham
trees deciduous and coniferous. trees grow on a bank of a forest in springtime in Alberta, British Columbia, Canada. logging, forestry, wood, lumber, wilderness
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Plants range in size from diminutive duckweeds only a few millimetres in length to the duckweed

duckweed
Duckweed (Lemna minor).
Dr. Wm.M Harlow/Photo Researchers

Plants play a vital role in the maintenance of life on Earth. All energy used by living organisms depends on the complex process of constituting photosynthesis. In nature all prolific source of energy in the form of community photosynthesis

photosynthesis
Diagram of photosynthesis showing how water, light, and carbon dioxide are absorbed by a plant to produce oxygen, sugars, and more carbon dioxide.
Encyclopædia Britannica, Inc.

The daily existence of aesthetic value, plants conserve other natural resources by protecting soils from erosion, by controlling water levels and quality, and by producing a favourable atmosphere.

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The following article summarizes the morphological, physiological, and ecological features of plants. The principal focus is on structure and function, physiology, life histories, and ecology, and on how the various plant groups have evolved, dispersed, and become adapted to life on land. The features that define each major plant group and the role they play in the wider ecosystem also are discussed.

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