Chapter 8 Understanding Populations Flashcards
kangaroo’s role as a large herbivore on Australian grasslands
clumped dispersion
niche
commensalism
density independentniche
woodpeckers eating at a birdfeeder
predation
mutualism
competition
parasitismcompetition
an owl snatching a mouse from a field to eat
predation
competition
parasitism
mutualismpredation
cause of death that does not occur more quickly in crowded populations
clumped dispersion
generation time
niche
density independentdensity independent
an orchid using a high tree branch as a place of attachment to receive more sunlight but not affecting the tree
predation
competition
mutualism
commensalismcommensalism
all the black squirrels living in a forest
population
clumped dispersion
generation time
density independentpopulation
three lampreys attached to a fish and sucking its body fluids for food
predation
competition
parasitism
commensalismparasitism
average age at which members of a species reproduce
population
generation time
niche
density independentgeneration time
description of a large population of geese gathered in a marsh
population
clumped dispersion
niche
density independentclumped dispersion
a butterfly pollinating a flower as it drinks nectar from the flower
competition
parasitism
mutualism
commensalismmutualism
The number of wild horses per square kilometer in a prairie is the horse population’s
density
dispersion
size
birth ratedensity
If over a long period of time each pair of adults in a population had only two offspring and the offspring lived to reproduce, the population would
grow
shrink
remain the same
disperse randomlyremain the same
Which of the following species has the highest reproductive potential?
a. rabbit b. elephant c. human d. horse
a. rabbit
Which of the following is not an example of exponential growth?
a. rabbit populations after being introduced to Australia b. reindeer of the Probilof Islands after eating most of the Lichens c. a bank account that earns interest d. mold appearing on bread overnight
b. reindeer of the Probilof Islands after eating most of the Lichens
The carrying capacity of an environment for a particular species at a particular time is determined by the
a. number of individuals in the species. b. distribution of the population. c. reproductive potential of the species. d. supply of the most limited resources.
d. supply of most limited resources.
Competition for food cannot occur
a. between two populations. b. among members of the same population. c. among populations whose niches overlap. d. between animals from two different ecosystems.
d. between animals from two different ecosystems
A bird that feeds at night and a bird that feeds during the day from the same flower is an example of
a. direct competition b. mutualism c. indirect competition d. indirect commensalism
c. indirect competition
In which type of interaction between species does one species benefit by harming another species but not killing it?
a. predation b. parasitism c. mutualism d. commensalism
b. parasitism
Which of the following examples would be least likely to be considered a symbiotic interaction?
a. A wren builds a nest in a cactus. b. A yucca moth pollinates and lays eggs on yucca flowers. c. A kit fox hunts and feeds on a kangaroo rat. d. Bacteria in a fox’s digestive system help it digest food.
c. A kit fox hunts and feeds on a kangaroo rat
Which of the following two species represent a relation-ship that has coevolved?
a. flowering plants and their pollinators b. foxes and their coyote competitors c. house cats and their prey d. rabbits and their relatives
a. flowering plants and their pollinators
