Chapter 8 Understanding Populations

kangaroo’s role as a large herbivore on Australian grasslands clumped dispersion niche commensalism density independent

woodpeckers eating at a birdfeeder predation mutualism competition parasitism

an owl snatching a mouse from a field to eat predation competition parasitism mutualism

cause of death that does not occur more quickly in crowded populations clumped dispersion generation time niche density 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 commensalism

all the black squirrels living in a forest population clumped dispersion generation time density independent

three lampreys attached to a fish and sucking its body fluids for food predation competition parasitism commensalism

average age at which members of a species reproduce population generation time niche density independent

description of a large population of geese gathered in a marsh population clumped dispersion niche density independent

a butterfly pollinating a flower as it drinks nectar from the flower competition parasitism mutualism commensalism

The number of wild horses per square kilometer in a prairie is the horse population’s density dispersion size birth rate

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 randomly

Which of the following species has the highest reproductive potential? a. rabbit b. elephant c. human d. horse

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

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.

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.

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

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

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.

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