Within a population and due to competition between individuals, those individuals with an advantage will survive to pass their genes on to the next generation. This idea is called
Which of the following is not a condition necessary for biological evolution to occur?
Reproduction must be asexual
Any heritable trait that enables an organism to survive through natural selection and reproduce better under prevailing environmental conditions is called
Coevolution can involve the interaction of
ALL OF THE ANSWERS: plants and herbivores, pollinators and flowers, parasites and hosts, plant roots and fungi
Over the course of time, the change in the gene pool of one species may lead to the change of the gene pool of another species. This process is called
The movement of tectonic plates influences evolution by
changing the locations of continents, causing some species to be geographically isolated from others
A hummingbird would be considered a specialist species because
it can only eat one certain type of food
Geographic isolation may result from
ALL OF THE ANSWERS: a volcanic eruption, an earthquake, a mountain range, a river
Species whose roles in an ecosystem are much more important than their abundance would suggest are called
Which term means the opposite of the others? Exotic species, native species, alien species, nonnative species, or generalist species.
Which of the following statements is false?
Interspecific competition is competition between two members of the same species
The relationship between fire ants and native ant populations is best described as
A relationship in which one species benefits while the other is neither helped nor harmed to any significant degree is best labeled
Of the following relationships, the one most likely to be described as a positive feedback loop is
Which of the following statements about primary succession is false?
It is an orderly progression from pioneer species to climax species indicative of the region being studied.
How long does it take natural processes to produce fertile soil?
several centuries to several thousands of years
Which of the following would undergo secondary succession?
a heavily polluted stream that has been cleaned up
The changes in population size, density, dispersion, and age structure are known as
Which of the following is not a reason why organisms tend to live in clumps?
intraspecific competition decreases when living in a group
The intrinsic rate of increase (r)
is the rate at which a population would grow if it had unlimited resources
A single factor that limits the growth, abundance, or distribution of a species in an ecosystem is called
a limiting factor
A logistic growth curve depicting a population that is limited by a definite carrying capacity is shaped like the letter
A population crash occurs when
a population overshoots carrying capacity and environmental pressures cause effects
Density-dependent population controls include all of the following except
human destruction of habitat
Which of the following terms best describes the type of population change you would expect to find for a muskrat population in a state that has just outlawed trapping?
Which of the following patterns would you expect to find for rabbits and coyotes in an undisturbed habitat?
Which of the following best describes the survivorship curve you would expect to find for a mountain gorilla?
Which of the following best describes the survivorship curve you would expect to find for a fish?