Ecology Test 3

Front 1

Which of the following demonstrates intraspecific competition

Back 1

a ponderosa pine forest thinning as the panderosa trees get larger

two sparrows fighting over a nesting site

Front 2

jackal attacking vultures that are trying to share its animal carcass is an example of

Back 2

interspecific interference competition

Front 3

two leaf bettles chewing on the same leaf is an example of

Back 3

intraspecific resource competition

Front 4

the -3/2 rule refers to

Back 4

the relationship between individual plant weight and plant diversity

Front 5

in the experimental study on competition among plant hoppers, which of the following was observed in he plant hopper population when population densities were high

Back 5

lower survivorship

Front 6

the competitive exclusion principle would say that

Back 6

if two species utilize the same resources they cannot live in the same space indefinitely

Front 7

the introduction of hybrid salt marsh grass Spartina angelica was able to colonize most of the British cost becuase

Back 7

it was better competitor in the lower tidal zones which were frequently under water.

Front 8

how did the Galapagos island drought change the pop structure in finches

Back 8

finches with larger beaks survived more because they were able to consume food the other finches could not and so their food source lasted the longest

Front 9

competition can have ecological effects that change the realized, but not fundamental niche of species.

competition can lead to evolutionary changes in a species that can change the species fundamental niche

Back 9

TRUE

TRUE

Front 10

which statement is FALSE regarding the study of barnacles along an intertidal exposure gradient

Back 10

barnacles that typically live at middle to lower zones are unable to live at upper zones due to competition

Front 11

Which of the following statements is FALSE regarding the rodent exclusion experiment by Jim Brown in New Mexico

Back 11

the removal of the large granivorous rodent increased the pop of the small granivorous and the small insectivorous rodents

Front 12

two species of finches on the Galapago Island show evidence of character displacement in their beak size where the finches coexist because

Back 12

ALL OF THE ABOVE

Front 13

competition interactions would be

Back 13

negative, negative

Front 14

exploitative interactions would be

Back 14

positive, negative

Front 15

exploitative interactions could include

Back 15

a leaf eating beetle on a tree

a lion hunting a gazelle

Front 16

in the study of starlings and the parasite Plagiorhynchus why did starling more often eat isopods that were infected with the parasite

Back 16

the infected isopods spent more time in the open where the starling could find them compared to uninfected isopods.

Front 17

Which of the following is a FALSE statement regarding the interaction of rust fungus and mustard plant

Back 17

the presence of the rust fungus causes the mustard to produce flowers containing the spores of the fungus along with the pollen of the plant

Front 18

the presence of a parasite has been shown to switch which species has the competitive advantage in flour beetles

Back 18

true

Front 19

the data on snowshoe hare and lynx pop dynamics which shows out of phase oscillations since the year 1980 was generated from

Back 19

records kept by fur trapping companies.

Front 20

in Gause's attempts to produce stable predator prey oscillations which trait achieved the desired pattern.

Back 20

combining a refuge with immigration from a source population

Front 21

Select the true statement regarding the factors that contribute to the control of snowshoe hare population

Back 21

predators had a negative effect on snowshoe hare populations

Front 22

Which of the following is NOT a type of refuge

Back 22

all of the above

Front 23

Which of the following is NOT an important plant mutualism

Back 23

interactions with herbivores that increase the amount and rate of seeds produced in plants

Front 24

what benefits do ants confer to their acacia mutualists

Back 24

protection from herbivores

release from competition with other plants

Front 25

why don't the ants affect the pollination of acacia trees

Back 25

the flowers contain anti-ant chemicals

Front 26

Which of the following statements is FALSE regarding the plant-mycorrhizae interaction

Back 26

he plant gets glucose from the mycorrhizae and the mycorrhizae gets soil nutrients from the plant

Front 27

theory predicts that mutualism will evolve when

Back 27

successful and unsuccessful mutualist combined have higher fitness than non mutualist in the population

Front 28

the marine mutualism most like the ant acacia mutualism is the

Back 28

pistol shrimp and coral reefs

Front 29

in the human mutualism withhoneguides

Back 29

birds stay in sight longer if the honey source is farther away

as the distance to the honey source decreases, the distance between stops goes down

Front 30

community structure include

Back 30

number of species

relative abundance of species

Front 31

a guild is best defined as

Back 31

a group of organisms living in the same place

Front 32

the log normal distribution of species abundance shows that

Back 32

most species have intermediate abundance

there are relatively few rare species

Front 33

the rank abundance curve of a species with high evenness value would have

Back 33

no slope

Front 34

Which of the following would qualify as factors that affect habitat heterogeneity

Back 34

all of the above

Front 35

increases in habitat heterogeneity would increase diversity by

Back 35

all of the above

Front 36

along a gradient of nutrient availability in the rainforest of Ghana

Back 36

there is highest diversity at low nutrient availability

Front 37

in the study looking at ecotomycorrhizal fungal diversity along a nitrogen gradient created by a fertilizer plant

Back 37

there were different species present at high & low nitrogen availability

there was high fungal diversity at low nitrogen availability

Front 38

in the study of the effects of urbanization on species richness, the highest species diversity was seen in the

Back 38

golf courses

Front 39

in the study of the effects of urbanization on species richness, the highest number of native birds were seen in the

Back 39

preserves

Front 40

in the study of the effects of urbanization on species richness the bird communities that were the most similar between Palo Alto, CA and Oxford OH were found in

Back 40

office/ appartments

Front 41

purpose of food webs is

Back 41

summarizes all the competitive, exploitative, and mutualistic relationship among species in a community

Front 42

which of the following statements is FALSE about communities

Back 42

a keystone species can provide community structure by it providing large amounts of habitat for species. (such as forest trees)

Front 43

The study in which chrusomelid beetles benefit from beaver browsing of cottonwoods on the weber river was considered a commensalism because

Back 43

the beaver activity was not positively or negatively affected by the beetles activity

the beetle benefited from the beaver's activity

Front 44

apparent competition can occur when

Back 44

all of the above

Front 45

in Roverts Paine's study on food web structure he found

Back 45

as the # of species in a community increased, the proportion of predators also increase.

removal of the top predator in a community often results in a decrease in species richness.

Front 46

in the study steelhead fish as a keystone species

Back 46

the exlusion of steelhead led to increase abundances of algal biomass

Front 47

how has China been controlling insect pest of orange orchards for over 17 centuries

Back 47

weaver ants

Front 48

this relationship between snail abundance and algal diversity in intertidal pools is because

Back 48

snails prefer to eat the strongest algal competitors

Front 49

humans can be considered keystone species because

Back 49

all of the above

Front 50

according to the movie call of Life which of the following issues causes all of the others

Back 50

overpopulation