← Chapter 23 Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All biomes ___ are biotic units and are classified by predominant plant types.--Developed by E.E. Clements and V.E. Shelford. biogeography ___ is the study of the spatial or geographical distribution of organisms, both past and present Biogeography works to describe and understand the processes responsible for patterns in the distribution of species and larger taxonomic groups. deciduous Type of tree where the leaves shed during a certain season. evergreen Applied to trees and shrubs for which there is no complete seasonal loss of leaves. drought, winter Name the 2 types of deciduous leaves broadleaf, needleleaf Name the 2 types of evergreen leaves tallgrass prairie a narrow belt dominated by bluestem that once ran north and south adjacent to the deciduous forest of eastern N. america; presence maintained by fire; largely destroyed by cultivation. mixedgrass prairie grassland in mid N. America, characterized by great variation in precipitation and a mixture of largely cool-season shortgrass and tallgrass species. shortgrass prairie westernmost grasslands of the great plains; characterized by infrequent rainfall, low humidity, and high winds; dominated by shallow-rooted, sod-forming grasses desert grassland grassland of hot, dry climates, with rainfall varying btwn 200 and 500 mm, dominated by bunchgrasses and widely interspersed w/ other vegetation. annual grassland grassland in CA dominated by exotic annual grasses that reseed every year, replacing native perennial grasses. steppes name given to Eurasian grasslands that extend from eastern Europe to western Siberia and China. pampas Temperate S. American grassland, dominated by bunchgrasses; much of the moister pampas are under cultivation. velds extensive grasslands in the east of the interior of South Africa, largely confined to high terrain.