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Human Biology

Cecie Starr, Beverly McMillan

Chapter 24

Principles of Ecology - all with Video Answers

Educators

Chapter Questions

03:02

Problem 1

_________ can be thought of as an ecosystem.
a. A freshwater spring
b. A rain forest
c. A city
d. All of the above

Molly Jaffe
Molly Jaffe
Numerade Educator
00:22

Problem 2

Ecosystems have _________.
a. energy gains and losses
b. nutrient cycling but not losses
c. one feeding level
d. a and b

Morgan Thompson
Morgan Thompson
Numerade Educator
01:40

Problem 3

__________ is the study of how organisms interact with one another as well as with their physical and chemical environment.

Molly Jaffe
Molly Jaffe
Numerade Educator
02:41

Problem 4

Feeding levels can be described as __________.
a. structured feeding relationships
b. who eats whom in an ecosystem
c. a hierarchy of energy transfers
d. all of the above

Molly Jaffe
Molly Jaffe
Numerade Educator
00:16

Problem 5

A feeding relationship that proceeds from algae to a fish, then to a fisherman, and then to a shark is _________.
a. a food chain
b. a food web
c. a and b

Morgan Thompson
Morgan Thompson
Numerade Educator
02:34

Problem 6

Primary productivity is affected by ____________.
a. photosynthesis and energy use by plants
b. how many plants are neither eaten nor decomposed
c. rainfall
d. temperatures
e. all of the above

Molly Jaffe
Molly Jaffe
Numerade Educator
00:23

Problem 7

Match the following terms with the suitable description.
ecological pyramid
biogeochemical e
cosystem parts
primary
a. water or nutrients moving from the cycle environment to organisms, then back
b. producers, consumers, productivity decomposers
c. producers capturing and storing energy in their tissues
d. energy relationships in an ecosystem

Morgan Thompson
Morgan Thompson
Numerade Educator