Name:
___________________
Class Time ___________
General Biology
Due at time of Exam V/ Final
Each question is
worth 1 point. Circle the letter of your answer.
1. A (An) _______________ consists of a biological _______________, or all the biotic factors in the area, along with the non-living _______________, factors.
a. ecosystem, community, abiotic
b. ecosystem, community, biotic
c. community, population, abiotic
d. community, population, biotic
e. organism, population, abiotic
2. In _______________ dispersion, individuals in a population are spaced in a pattern less, unpredictable way.
a. clumped
b. uniform
c. random
d. a and b
e. a and c
3. _______________ _______________ is (are) the number of individuals in a population that the environment can just maintain with no net increase or decrease.
a. Logistic growth
b. Carrying capacity
c. Density-dependent factors
d. Density-independent factors
e. Exponential growth
4. Which of the following shows the effect of a density-dependent limiting factor?
a. A forest fire kills all the pine trees in a patch of forest.
b. Early rainfall triggers the explosion of a locust population.
c. Drought decimates a wheat crop.
d. Rabbits multiply, and their food supply begins to dwindle.
e. All of the above are examples of density-dependent factors.
5. What will be the approximate shape of the age-structure diagram of a stable population?
a. an hourglass
b. an inverted pyramid
c. a circle
d. a pyramid
e. a rectangle
6. A community’s ability to resist change and return to its original species composition after being disturbed is referred to as the community’s _______________.
a. diversity
b. prevalent form of vegetation
c. stability
d. trophic structure
e. key property
7. An organism’s ____________________ is how it “fits into” an ecosystem.
a. interspecific interaction
b. competitive exclusion
c. resource partitioning
d. intraspecific interaction
e. ecological niche
8. Poison-arrow frogs are brightly colored to caution predators of their chemical defenses. This is an example of:
a. cryptic coloration
b. warning coloration
c. Batesian mimicry
d. Mullerian mimicry
e. camouflage
9. In terms of primary succession ____________________ occurred before ____________________.
a. retreating glaciers, moss and lichen
b. barren landscape, alders and cottonwoods
c. moss and lichen, spruce
d. alders and cottonwoods, spruce and hemlock
e. all of the above are correct
10. According to the map of the major terrestrial biomes (Fig.
19.33) most of
a. chaparral
b. temperate grassland
c. tundra
d. savanna
e. coniferous forest
T or F 11. Human disturbance of biological communities is almost always destructive, reducing species diversity.
12. A species that humans have transported from the specie’ native location to another location is called a (an) _______________ species.
a. introduced
b. endemic
c. exotic
d. a and b
e. a and c
13. _______________, or increased algae growth, alters aquatic ecosystems.
a. Deforestation
b. Biological magnification
c. Chemical cycling
d. Eutrophication
e. Protropication
14. The seventh mass extinction in the history of life is well under way. The primary cause for this extinction is _______________.
15. The three main causes of the biodiversity crisis are:
a. overexploitation, introduced species, and habitat destruction
b. introduced species, habitat destruction, and ecosystem diversity
c. habitat destruction, ecosystem diversity, and species diversity
d. ecosystem diversity, species diversity, genetic diversity
e. species diversity, genetic diversity, and overexploitation