j asked: 8. Westerly winds in temperate zones are the result of
a. decending air masses flowing toward the poles
b. the rotation of earth
c. the unequal speed of land moving through space at the equator and the poles
d. a and b
e. a, b, and c
9. In mountainous areas of western North America, north-facing slopes (compared with south-facing slopes) would be expected to
a. receive more sunlight
b. be warmer and drier
c. support biological communities similar to those found at lower elevations and higher latitudes
d. support biological communities similar to those found at higer elevations and higher latitudes
e. b and c
11. Thorough mixing of water in temperate lakes during the spring and fall turnovers is made possible by which of the following?
a. warm water layered at the top
b. cold water layered at the bottom
c. a pronounced thermocline under the surface
d. changing water temperature profiles
e. currents generated by nektonic animals
14.Imagine soem cosmic catastrophe jolts Earth so that its axis is perpendicular to the orbital plane between Earth and the sun. The most obvious effect of this change would be
a. the elimination of tides
b. an increase in the length of night
c. an increase in the length of a year
d. the elimination of the greenhouse effect and a cooling of the equator
e. the elimination of seasonal variation
15. Which of the following environmental features might influence microclimates?
a. a discarded soft-drink can
b. a tree
c. a fallen log
d. a stone
e. all of the above
16. As climate changes because of global warming, species’ ranges in the northern hemisphere may move northward. The trees are most likely to avoid extinction in such an environment are thsoe that
a. have wind-dispersed seeds
b. have animal-dispersed seeds
c. produce well-provisioned seeds
d. a and b
e. a, b, and c
20. You are interested in studying how organisms react to a gradient of abiotic conditions and how they coexist in this gradient. The best biome in which to conduct such a study is
a. mountains
b. an intertidal zone
c. a river
d. tropical forest
e. an eutrohpic lake
21. Coral animals
a. are a diverse group of cnidarians
b. are predominantly photosynthetic, multicellular algae
c. excrete external, carbonaceous skeletons
d. a and c
e. b and c
23.In the development of terrestrial biomes, which factor is most dependent on all the others?
a. the species of colonizing animals
b. prevailing temperature
c. prevailing rainfall
d. mineral nutrient availablity
e. soil structure
24. An area in which different terrestrial biomes grade into each other is known as a(n)
a. littoral zone
b. vertically stratified canopy
c. ecotone
d. abyssal zone
e. cline
25. Two plant species live in the same biome but on different continents. Although the two species are not at all colosely related, they may appear quite similar as a result of
a. parallel evolution
b. convergent evolution
c. allopatric speciation
d. introgression
e. gene flow
27. In which community would organisms most likely have adaptations enabling them to respond to different photoperiods?
a. tropical forest
b. coral reef
c. savanna
d. temperate forest
e. abyssal
Andre
