QUESTIONS AND ANSWERS65
Which of the following would have the least effect on how successful a species is at adapting to
a new environment?
A. population size
B. genetic variation
C. generation time
D. amount of parental care - ANSWERS-D
Which two scientists are credited with developing the theory of evolution by natural selection?
A. Mendel and Darwin
B. Muir and Carson
C. Watson and Crick
D. Darwin and Wallace - ANSWERS-D
,Which of the following is not considered to be contributing to the current increase in extinction
rates?
A. natural selection
B. climate change
C. over-harvesting
D. habitat destruction - ANSWERS-A
All of the populations of organisms within a given area make up a
A. ecosystem
B. community
C. trophic level
D. biosphere
E. genus - ANSWERS-B
What is one reason for an even distribution pattern among a particular species in a community?
A. The species forms hierarchal social groups.
,B. The species is breeding.
C. Resources are not limiting.
D. Members of the species mate for life.
E. The species is territorial. - ANSWERS-E
Which does not describe patterns of population growth?
A. Populations can grow without restraint as long as resources are not limiting.
B. The size of some populations tends to remain relatively constant over time.
C. In some populations size fluctuates in a cyclical pattern.
D. Population size may not vary sporadically in response to environmental changes.
E. Population size is not affected by other populations. - ANSWERS-E
The intrinsic growth rate of a population
A. is the number of yearly births in a population.
B. is the number of yearly births minus the number of yearly deaths in a population.
, C. is the minimum number of births likely to occur in a population under ideal circumstances.
D. is the maximum potential for growth in a population under ideal conditions.
E. is the maximum potential for growth in a population given limited resources. - ANSWERS-D
Which factor is not typically density-dependent in an animal population?
A. nesting sites
B. food
C. water
D. shelter from cold
E. severe storms - ANSWERS-E
An exotic species is one which (??) an ecosystem.
A. is rare in
B. is foreign to
C. does not interact with the other species in