In the real world, many factors determine the number of orgnisms in any one population. Yet, a "superfly" with unlimited food and no mortality would show what type of growth?
In cases of exponential growth rates, a population ___________ each year.
Is multiplied by a constant number
Carrying capacity is the population or biomass
Of a species that an enviroment can support on a long-term basis
In the real world, population explosion is usually followed by
A population crash
A dieback or population crash, often occurs after a species ___________ its enviromental carrying capacity.
An island has formed off the coast of the Pacific northwest. The Department of natural Resources (DNR) has determined that there is enough land area for a herd of 100 elk, yet they say the carrying capacity is only 60 elk. This inequality can best be explained by the fact that the
Physical factor of space is only one of the determiners for population size in a community
Logistic growth rates are those in which a population
Grows rapidly when conditions are good, then slows at it approaches crrying capacity
The ability to produce rapid population overshoots can be useful strategy for a species that tends to
colonize new territory
Which of the following types of population growth patterns would best represent a group of elephants that enter a new, open habitat and become a stable part of that ecosystem?
Which of the following population curves would best represent a group of elephants that enter a new open habitat and become a stable part of that ecosystem?
Widespread starvation is an example of ___________ population control.
You are studyinying an organism that is a pioneer species is an opportunist and does not care for its offspring. This orgamism probably has a ___________ population growth strategy.
R-adapted and irregular
You are studying an organism that is fairly large, matures slowly, lives fairly long and cares for its offspring. This organism probably has a ______________ population growth strategy.
Density-independent population control factors cause mortality
Regardless of population size
An organism with _______ "strategies" would be considered to have ________ natality.
R-adapted; high AND k-adapted
Natality is usually
Variable, depending on enviromental conditions
The term "fecundity" refers to an organism's ____________ while fertility is
Physical ability to reproduce; actual number of offspring produced
Life expectancy is the
Number of years an individual of certain age will probably live
Survivorship is determined by
The precentage of a cohort that survives to a certain age
The longest period of life that a given type of organism can reach is known as
The most common factor that affects birth and death rates within a population independently of density is
If there is no migration, the size of a population is limited solely by interaction between
Natality and mortality
Which of the following is an abiotic population control mechanism?
In general, abiotic regulatory factors tend to be _________ while
biotic factors tend to be ___________.
Which of the following is an intraspecific interaction?
Island biogeography explains the phenomenon of _________ terrestrial species on islands small and far from the mainland when compared to larger islands that are closer to the mainland and have ________ terrestrial species.
Use the following information. DNA studies suggest that all existing cheetahs share a single male ancestor that survived in thee not-too-distant past. Generlly, all male cheetahs are now nearly genetically identical and have abnormal sperm with decreased reproductive sucess. The population is extremely vulnerable and genetically, may be predestined for extinction. A species that is similar to the cheetah is the elephant seal because
All of the individuals in the population are basically genetically identical
Use the following information. DNA studies suggest that all existing cheetahs share a single male ancestor that survived in thee not-too-distant past. Generlly, all male cheetahs are now nearly genetically identical and have abnormal sperm with decreased reproductive sucess. The population is extremely vulnerable and genetically, may be predestined for extinction. The first part of this scenerio describes
The founder effect or a demographic bottleneck
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