Biology: The Unity and Diversity of Life

Cecie Starr, Ralph Taggart, Christine Evers

Chapter 45

Community Ecology - all with Video Answers

Educators

Chapter Questions

Problem 1

The type of physical environment in which a species typically lives is its ______________.
a. niche
b. habitat
c. community
d. population

Aditya Sood

Aditya Sood

Numerade Educator

Problem 2

Which cannot be a symbiosis?
a. mutualism
b. parasitism
c. commensalism
d. interspecific competition

Aditya Sood

Numerade Educator

Problem 3

A tick is $a(n)$ ____________.
a. parasitoid
b. ectoparasite
c. endoparasite

Charles Machakwa

Charles Machakwa

Numerade Educator

Problem 4

________________ can lead to resource partitioning.
a. Mutualism
b. Parasitism
c. Commensalism
d. Interspecific competition

Aditya Sood

Numerade Educator

Problem 5

Match the terms with the most suitable descriptions.
______________ mutualism
______________ parasitism
______________ commensalism
______________ predation
______________ interspecific
______________ competition
a. one free-living species feeds on another and usually kills it
b. two species interact and both benefit by the interaction
c. two species interact and one benefits while the other is neither helped nor harmed
d. one species feeds on another that it lives on or in
e. two species access a resource

Aditya Sood

Numerade Educator

Problem 6

Lizards that eat flies they catch on the ground and birds that catch and eat flies in the air are engaged in ____________ competition.
a. exploitative
b. interference
c. intraspecific
d. interspecific
e. both a and d
f. both b and

Morgan Thompson

Morgan Thompson

Numerade Educator

Problem 7

By a currently favored hypothesis, species richness of a community is greatest between physical disturbances of ________________ intensity or frequency.
a. low
b. intermediate
c. high
d. variable

Morgan Thompson

Morgan Thompson

Numerade Educator

Problem 8

With ___________, one species evolves to look like another.

Charles Machakwa

Charles Machakwa

Numerade Educator

Problem 9

Growth of a forest in an abandoned corn field is an example of ___________.
a. primary succession
b. resource partitioning
c. secondary succession
d. competitive exclusion

Aditya Sood

Numerade Educator

Problem 10

Species richness is greatest in communities ____________.
a. near the equator
b. in temperate regions
c. near the poles
d. that recently formed

Morgan Thompson

Morgan Thompson

Numerade Educator

Problem 11

If you remove a species from a community, the population size of its main __________ is likely to increase.
a. parasite
b. competitor
c. predator

Aditya Sood

Numerade Educator

Problem 12

___________ steal parental care.
a. Mutualists
b. Commensalists
c. Brood parasites
d. Predators

Aditya Sood

Numerade Educator

Problem 13

The oldest established land communities are ____________.
a. in the Arctic
b. in temperate zones
c. in the tropics
d. on volcanic islands

Charles Machakwa

Charles Machakwa

Numerade Educator

Problem 14

Biological control of pest species ____________.
a. has no side effects
b. involves mutualists
c. uses natural enemies
d. requires use of chemicals

Charles Machakwa

Charles Machakwa

Numerade Educator

Problem 15

Match the terms with the most suitable descriptions.
____________ area effect
____________ pioneer
____________ species
____________ indicator
____________ species
____________ keystone
____________ species
____________ exotic
____________ species
____________ resource
____________ partitioning
a. native species with large effect
b. first species established in a new habitat
c. more species on large islands than small ones at same distance
from the source of colonists
d. species that is especially sensitive to changes in the environment
e. allows competitors to coexist
f. often outcompete, displace native species of established community

Aditya Sood

Numerade Educator