28. Which o f the following are important biotic factors that can
affect the structure and organization of biological communities?
A. light intensity, seasonality C. predation, competition
B. availability of minerals, soil pH D. precipitation, wind
C
Which o f the following groups would be most likely to exhibit
uniform dispersion?
A. moths in a city at night B. red squirrels, who actively defend
territories C. cattails, which grow primarily at edges oflakes and
streams
D. dwarf mistletoes, which parasitize particular species of forest
tree
B
30. A molecule in a plant is transported by going into the cytosol
of one cell, by leaving the cytosol and entering the cell wall, and
then entering the cytosol of a second cell. This molecule has
taken which transport route?
A.transmembrane
B.symplastic
C.Apoplastic
D.Protoplastic
A
, 31. Which o f the following is NOT a mechanism utilized by
plants to discourage self-fertilization?
A. Formation of dioecious plants
B. stamen and carpels that mature at different times
C. self incompatibility
D. brightly colored sepals that replace petals
D
32. You are preparing seeds for shipment abroad. The trip may
take several weeks. To ensure that the seeds do NOT germinate
prematurely you might consider treating them with...
A. cytokinins. E. gibberillin. B. ethylene C. auxin D. abscisic
acid
D
33. This terrestrial biome has shrubs and small trees, and is
found in areas with Mediterranean
A. Savanna
B. Chaparral
C. Tundra
D. Tropical rain forest
E. Temperate broadleaf forest
B
34. This aquatic biome may have a seasonal them!o~line and
may be susceptible to eutrophication due to sewage runoff
A. Esturay