AP BIOLOGY

Detailed explanation-1: -Very few plants can grow in this cold, dry place. Berkeley’s Biomes group divides the tundra into two main groups. They are the arctic tundra and the alpine tundra. The arctic tundra is located in the most northern part of the world.

Detailed explanation-2: -Arctic tundra are found on high-latitude landmasses, above the Arctic Circle-in Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia, for example-or on far southern regions, like Antarctica. Alpine tundra are located at very high elevations atop mountains, where overnight temperatures fall below freezing.

Detailed explanation-3: -Much of Alaska and about half of Canada are in the tundra biome. Tundra is also found at the tops of very high mountains elsewhere in the world. Temperatures are frequently extremely cold, but can get warm in the summers.

Detailed explanation-4: -Soils of the alpine tundra Similar to the arctic tundra, low plant biomass (the amount of plant material), generally low density of animals, and the low temperatures make for slow decomposition and low nutrient cycling. So plants need to be able to depend on few soil nutrients.

Detailed explanation-5: -There are three regions and associated types of tundra: Arctic tundra, alpine tundra, and Antarctic tundra. Tundra vegetation is composed of dwarf shrubs, sedges, grasses, mosses, and lichens.