CH 50 The biosphere (52 notes)
1) Important abiotic factors in ecosystems include which of the following?
A) I only B) II only C) III only D) I and II only
E) I, II, and III
2) All of the following statements about ecology are correct except:
A) Ecology is the study of the interactions between biotic and abiotic aspects of the environment.
B) Ecology is a discipline that is independent from natural selection and evolutionary history
C) Ecologists may study populations and communities of organisms.
D) Ecology spans increasingly comprehensive levels of organization, from individuals to ecosystems.
E) Ecological studies may involve the use of models and computers.
3) Which of the following levels of organization is arranged in the correct sequence from most to least inclusive?
A) ecosystem, community, population, individual
B) community, ecosystem, individual, population
C) individual, population, community, ecosystem
D) population, ecosystem, individual, community
E) individual, community, population, ecosystem
4) Which of the following are important biotic factors that can affect the structure and organization of biological
A) nutrient availability, soil pH, light intensity
B) precipitation, wind, temperature
C) predation, competition, disease
D) A and B only
E) A, B, and C
5) Landscape ecology is best described as the study of
A) the array of interacting species within a community.
B) abiotic factors and the community of species that exist in a particular area.
C) the factors affecting the abundance of single species.
D) physiological and behavioral ways in which organisms meet the challenges of their environment.
E) related arrays of ecosystems.
6) Ecology as a discipline directly deals with all of the following levels of biological organization except
A) community. B) population. C) organismal.
. E) ecosystem.
7) "How does the foraging of animals on tree seeds affect the distribution and abundance of the trees?" This
A) is difficult to answer because a long-term experiment would be required.
B) is a valid ecological question.
C) is difficult to answer because a large experimental area would be required.
D) Both A and B are correct.
E) A, B, and C are correct.
8) You are working for the Environmental Protection Agency considering the effect of a potentially toxic chemical in
drinking water. There is as yet no documented scientific evidence against the chemical, but many suspect it to be a
health hazard. Using the Precautionary Principle, what would be a reasonable environmental policy?
A) Establish a contingency fund to handle insurance claims in the event that the chemical turns out to produce
negative health effects.
B) Caution individuals to use their own judgment in deciding whether to drink water from a potentially contaminated