ACTUAL Exam Questions and CORRECT
Answers
Ecoregions - CORRECT ANSWER - areas with similar ecosystems and type, quantity,
and quality of environmental resources
Does the federal government or TPWD recognize more ecoregions in Texas? - CORRECT
ANSWER - The federal government
High plains (same name among both) - CORRECT ANSWER - Elevation of 3000-4500 ft,
precipitation 15-22 in/yr. Problem plants: mesquite, yucca, juniper, cholla
Southwest Tablelands (federal) - CORRECT ANSWER - Rolling plains - TPWD
800-3000 ft in elevation, precipitation 20-28 in/yr. Short to tallgrass prairie, this is where the
escarpment is. Crop/livestock production.
Where is the Palo Duro mouse found (counties) - CORRECT ANSWER - Randall,
Armstrong, and Briscoe. They are a state threatened species.
East Central Plains - CORRECT ANSWER - Post-oak Savannah. Houston toad is found
here.
South Central Plains - CORRECT ANSWER - Piney Woods. 200-500 ft in elevation, 36-
50 in/yr. Rolling terrain, with pines and oaks, bottomlands, hardwood forests. Red cockaded
woodpecker is federally threated (downgraded)
Western Gulf Coastal Plain - CORRECT ANSWER - Gulf Prairies/Marshes. <150 ft
elevation. Tall grasses, oaks, mesquites, salt marshes. Barrier islands contain dunes and other
habitats. Whooping cranes winter here.
, Lower Rio Grande Valley - CORRECT ANSWER - >500 species of birds, 300 species of
butterflies, 1,200 species of plants
Chihuahuan Deserts - CORRECT ANSWER - Trans-Pecos. Chihuahuan montane
woodlands. Guadalupe mountains home to Guadalupe peak at 8,751 ft.
True or false, habitat is used to describe multiple facets of the environment - CORRECT
ANSWER - True; food, cover, water, temperature, precipitation, soils, etc.
Geophagy - CORRECT ANSWER - eating of soil
Habitat - CORRECT ANSWER - the place where an organism lives. The resources and
conditions present in an area that produce occupancy, including survival and reproduction by an
organism.
Habitat use - CORRECT ANSWER - the way an animal uses the physical and biological
resources in a habitat
Habitat selection - CORRECT ANSWER - a process involving a series of innate and
learned behavioral decisions made by an animal about what habitat to use.
What cues do animals use to select habitats? - CORRECT ANSWER - Physical/chemical
gradients, temperature, pH, salt, vegetation structure, vegetation composition, soil type.
Why do animals not always choose the best habitat? - CORRECT ANSWER -
Competition may make it beneficial for an individual to select a poorer habitat. Predators may
also prevent occupancy.
Critical habitat - CORRECT ANSWER - a legal term describing the physical or biological
features essential to conservation of a species