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Biology

Eldra Solomon, Linda Berg, Diana W. Martin

Chapter 52

Community Ecology - all with Video Answers

Educators

Chapter Questions

01:19

Problem 1

An association of populations of different species living together in one area is a(an) (a) organismic model (b) ecological niche (c) ecotone (d) community (e) habitat

Parvati Devi
Parvati Devi
Numerade Educator
01:31

Problem 2

Community structure and community functioning include all of the following except (a) community resilience to disturbances (b) the reproductive success of an individual organism (c) the interactions among different species (d) the number and types of species present and the relative abundance of each species (e) energy flow throughout the community

Parvati Devi
Parvati Devi
Numerade Educator
01:32

Problem 3

A limiting resource does all of the following except (a) tends to restrict the ecological niche of a species (b) is in short supply relative to a species' need for it (c) limits the presence of a species in a given community (d) results in an intermediate disturbance (e) may be limiting for only part of an organism's life cycle

Danielle Ashley
Danielle Ashley
Numerade Educator
01:33

Problem 4

Monarch and viceroy butterflies are probably an example of (a) Batesian mimicry (b) character displacement (c) resource partitioning (d) Müllerian mimicry (e) cryptic coloration

Parvati Devi
Parvati Devi
Numerade Educator
01:33

Problem 5

A symbiotic association in which organisms are beneficial to one another is known as (a) predation (b) interspecific competition (c) intraspecific competition (d) commensalism (e) mutualism

Danielle Ashley
Danielle Ashley
Numerade Educator
01:36

Problem 6

A species’ ____________ is the totality of its adaptations, its use of resources, and its lifestyle. (a) habitat (b) ecotone (c) ecological niche (d) competitive exclusion (e) coevolution

Danielle Ashley
Danielle Ashley
Numerade Educator
02:21

Problem 7

Competition with other species helps to determine an organism's (a) ecotone (b) fundamental niche (c) realized niche (d) limiting resource (e) ecosystem

Danielle Ashley
Danielle Ashley
Numerade Educator
01:30

Problem 8

"Complete competitors cannot coexist" is a statement of the principle of (a) primary succession (b) limiting resources (c) Müllerian mimicry (d) competitive exclusion (e) character displacement

Danielle Ashley
Danielle Ashley
Numerade Educator
01:24

Problem 9

The ____________ signifies that species richness is greater where two communities meet than at the center of either community. (a) edge effect (b) fundamental niche (c) character displacement (d) realized niche (e) limiting resource

Danielle Ashley
Danielle Ashley
Numerade Educator
01:28

Problem 10

Primary succession occurs on (a) bare rock (b) newly cooled lava (c) abandoned farmland (d) both a and b are examples (e) a, b, and $c$ are examples

Parvati Devi
Parvati Devi
Numerade Educator
01:34

Problem 11

The tendency for two similar species to differ from one another more markedly in areas where they occur together is known as (a) Müllerian mimicry (b) Batesian mimicry (c) resource partitioning (d) competitive exclusion (e) character displacement

Parvati Devi
Parvati Devi
Numerade Educator
01:26

Problem 12

An unpalatable species demonstrates its threat to potential predators by displaying (a) character displacement (b) limiting resources (c) cryptic coloration (d) aposematic coloration (e) competitive exclusion

Danielle Ashley
Danielle Ashley
Numerade Educator
02:09

Problem 13

An ecologist studying several forest-dwelling, insect-eating bird species does not find any evidence of interspecific competition. The most likely explanation is (a) lack of a keystone species (b) low species richness (c) pronounced intraspecific competition (d) coevolution of predator-prey strategies (e) resource partitioning

Danielle Ashley
Danielle Ashley
Numerade Educator
02:08

Problem 14

Support for the individualistic model of community structure includes (a) the decline of honeybees due to two species of parasitic mites (b) the identification of fig trees as a keystone species in tropical forests (c) the competitive exclusion of one Paramecium species by another (d) the distribution of trees along a moisture gradient in Wisconsin forests (e) the effects of the removal of a dominant rodent species from an Arizona desert

Parvati Devi
Parvati Devi
Numerade Educator
02:15

Problem 15

Connell's hypothesis to explain the effect of disturbance on species richness is known as the (a) distance effect (b) intermedi- ate disturbance hypothesis (c) species richness-energy hypothesis (d) time hypothesis (e) edge effect

Salman Saeed
Salman Saeed
Numerade Educator