Exam 24: Terrestrial Ecosystems

The density of woody vegetation in a savanna is controlled through

Large grazing ungulates and burrowing animals are most abundant in

Deciduous leaves usually live for more than a single year or growing season.

Leaf characteristics are useful indicators of the trade-offs plants make to combat environmental constraints.

Similar climates produce similar vegetation structure around the world.

In the tropical latitudes,the length of the dry season increases with distance from the equator.

The vegetation of tundra is dominated by

The dominant biome in Mediterranean climates found between 30° and 40° latitude is

Vegetation that is sclerophyllous is adapted to areas with ample moisture and moderate temperatures.

The vegetation formation dominated by needle-leaf evergreen trees and occurring where growth is restricted to a few months of the year due to low temperatures is referred to as

There are consistent patterns in the distribution and abundance of dominant plant life-forms across the biosphere because these life-forms share ________ to the selection pressures of climate and the physical environment.

Tundra occurs at high elevations on mountains.

The dominant vegetation types in temperate shrublands are

Conifer forests are dominated by needle-leaf evergreen trees.

________ is the study of the spatial or geographical distribution of organisms,both past and present.

Tropical ________ refers to vegetation in the drier tropics and subtropics that is dominated by a ground cover of grasses with scattered shrubs or trees.

Typical soils of the temperate forest region are

A(n)________ climate is characterized by hot,dry summers and cool,moist winters.

________ is the perennially frozen subsurface that develops in boreal and arctic systems where the ground temperatures remain below 0°C for extended periods of time.

Tropical rain forests typically have a thick layer of litter on the forest floor.