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MB 21.1
MB Chapter 21, Section 1
Term | Definition |
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biome | a large region characterized by a specific type of climate and certain types of plant and animal communities |
tundra | a treeless plain that is located in the Arctic or Antarctic and that is characterized by very low winter temperatures; short, cool summers; and vegetation that consists of grasses, lichens, and perennial herbs |
permafrost | in arctic regions, the permanently frozen layer of soil or subsoil |
tropical forest | a forest or jungle near the equator that is characterized by large amounts of rain and little variation in temperature and that contains the greatest known diversity of organisms on Earth |
canopy | the layers of treetops that shade the forest floor |
epiphyte | a plant that uses another plant for support, but not for nourishment |
coniferous tree | trees that bear seeds in cones and tend to be evergreen |
deciduous tree | trees that lose their leaves at the end of the growing season |
temperate deciduous forest | a forest (or biome) that is characterized by trees that shed their leaves in the fall |
taiga | a region of evergreen, coniferous forest below the arctic and subarctic tundra regions |
temperate grasslands | a community (or biome) that is dominated by grasses, has few trees, and is characterized by cold winters and rainfall that is intermediate between that of a forest and a desert |
savanna | a plain full of grasses and scattered trees and shrubs; found in tropical and subtropical habitats and mainly in regions with a dry climate, such as East Africa |
chaparral | a type of vegetation that includes broad-leafed evergreen shrubs and that is located in areas with hot, dry summers and mild, wet winters |
desert | a region that has little or no vegetation, long periods without rain, and extreme temperatures; usually found in warm climates |