Biology DSM 51

which of the following best describes resources partitioning

slight variations in a niche that allow similar species to coexist

aphids drinking plant fluids are considered an

ectoparasite

match each of the types of species interactions to its associated effect on fitness

+/+ mutualism, +/- consumption, +/0 commensalism, -/- competition

the combination of conditions that a species can tolerate in the presence of competitors is a

realized niche

which statement best describes the evolutionary significance of mutualism

interaction increases the survival or population growth rate(s) of both species

all else being equal, which islands are expected to have a higher species richness?

Islands at lower latitudes are expected to have more species richness

which of the following would not be an inducible defense?

yellow and black coloration in bees

a butterfly that consumes nectar from a flower would be considered a?

herbivore

established shrubs providee shade that protects new growth from the sun?

facilitation

existing species have no effect on new growth?

tolerance

mature trees prevent sunlight from reaching new growth on the forest floor?

inhibition

true of inducible defenses

decline in prey species if consumers leave the habitat, plants produce chemical toxin such as nicotine, cyanide, and morphine

competition statement

when two competitors have slightly different fundamental niches, the poorer competitor can often take refuge in areas that are beyond the better competitors’ tolerance

which event would lead to primary succession?

a landslide causes the removal of the soil and the organisms that live in the area, leaving rock exposed

The Shannon diversity index is an estimate of …

species richness, abundance, and evenness

the theory of island biogeography?

immigration rates should be lower on small islands far from land than on large islands close to land

which of the following best describes resource partitioning

slight variations in a niche that allow similar species to coexist

which of the following concepts was central to the discoveries of Rosemary and Peter Grant?

character displacement

which of the following statement describes a response of predators to prey?

a species of fish hides until another fish swims past that it can attack and eat

aphids drinking plant fluids are considered a(n)

ectoparasite

which of the following is an example of a parasite manipulating its host?

a nematode causing infected ants to display their reddened posterior area, raising the possibility of bird predation

evolutionary significance of mutualism

interaction increases the survival or population growth rate(s) of both species

this explains why herbivores eat so little of the food available to them?

herbivores are kept in check by predation and disease

food web

a diagram that shows predatory linkages among several species

all else being equal, which islands are expected to have a higher species richness

islands at lower latitudes are expected to have more species richness