Assignment 5_ecology (1)

population? a. an hourglass b. an inverted pyramid c. a rectangle d. a pyramid 13) The harsh winter that led to the death of many moose in 1996 is an example of ________. a. a trigger for logistic growth b. a density-independent factor c. biological control d. a density-dependent factor 14) In order to assess the species diversity of a community, you would need to know the number of different species present as well as ________. a. the fraction of these species that are plants. b. the number of trophic levels in the community c. the relative abundance of the different species d. the intensity of interspecific competition in the community 15) Small areas that have many endangered and threatened species are referred to as ________. a. biodiversity hot spots b. endemic environments c. biologically magnified. d. biodiverse environments 16) Species found in only one place on Earth are called ________ species. a. exotic b. endemic c. keystone d. hot spot 17) As a result of a severe disturbance, a community will ________. a. undergo succession. b. be replaced by organisms in random order. c. not change. d. not be repopulated. 18) Organisms that consume producers are ________. a. primary consumers b. detritivores c. decomposers d. producers 19) In the food chain grass antelope human lion, the antelope is ________. a. both an herbivore and a primary consumer b. both an herbivore and a secondary consumer c. a secondary consumer only d. both a producer and a primary consumer 20) Small fishes that eat zooplankton are ________. a. secondary consumers b. tertiary consumers c. primary consumers d. producers 21) Which of these convert organic matter to inorganic matter by breaking down dead organisms? a. producers b. decomposers c. primary consumers d. detritivores 22) Most decomposers are ________. a. plants and fungi b. fungi and prokaryotes c. animals d. bacteria and plants