Exam 26: Biomes

Despite receiving up to several feet of snow each winter, conifers in the northern boreal forest are adapted to ___________________.

Thick waxy cuticle layers and dense hairs on leaves are morphological adaptations to:

Naturally occurring grasslands are usually found toward the interiors of continental masses.They tend to intergrade with ____________ in areas where annual precipitation drops below 25 cm (10 inches)annually.

Which of the following biomes is characterized by the predominance of broad-leaved trees that are adapted to subfreezing temperatures as long as the cold is accompanied by precipitation or snow cover?

Due to permafrost in tundra areas soils are wet and marshy even though the region received limited precipitation.

Terrestrial biotic communities as they occur on a continental or global scale are referred to as __________.

Savannas are primarily grasslands with:

Desert animals tend to forage at night.

The most fragile of the biomes is the

Climax vegetation always consists of some type of trees.

______________ forests are found along the Pacific Coast and along the Rocky Mountain and California mountain ranges.

Bromeliads and orchids are examples of:

Hardwood trees such as oak, maple, walnut, and cherry are vegetational types of:

Swamps, bogs, marshes, and moors are all types of:

Vegetation of the tundra is dominated by _____________________.

For a given biome, the vegetational species are exactly the same regardless of the geographical location.For example the species found in a desert in the United States is exactly the same as species found in the deserts of Africa.

A low-growing, understory vegetation dominates in the early spring and again in the fall because of the available light resulting from leaf drop.This is a characteristic of the:

Another name for the northern coniferous or boreal forest is the ___________.

When high winds tear away matted vegetation of tundra, the resulting barren patch is called a ______________.

Eastern North America, south of the northern boreal forest, is dominated by temperate deciduous forests.Within this biome, gradations of annual low and high temperatures and precipitation result in species assemblages such as __________________.