Apes

Topics: Oxygen, Primary production, Photosynthesis Pages: 18 (1412 words) Published: October 29, 2014

Chapter 7 Multiple Choice Questions
Name: ____________________________________________________________
1)

Any network of relationships among a group of components, which interact with and influence one another through exchange of matter and/or information, is referred to as ________. A)

an interchange
B)

a system
C)

an ecosystem
D)

an environmental collaboration
E)

hierarchy
Diff: 1
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors
2)

A system receiving inputs and producing outputs without undergoing any changes in size or function is said to be in ________. A)

static control
B)

environmental balance
C)

harmonic resonance
D)

normal balance
E)

dynamic equilibrium
Diff: 1
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors

3)

Cattle on an open range, in some areas, may compact fragile soils while grazing. This can damage plant roots, leading to fewer, smaller plants, which may in turn cause cattle to graze more and work harder to obtain food. This is an example of a ________. A)

positive feedback loop
B)

negative feedback loop
C)

homeostatic system
D)

dynamic equilibrium
E)

food web
Diff: 2
Objective:

7.3 Human impacts on systems and cycles

4)

The eutrophication that has taken place in the Gulf of Mexico and other locations appears to be due to ________. A)

global warming from human use of fossil fuels
B)

pesticide use along the waterways
C)

heavy metals dumped in the sewage
D)

weather alone, because it is only obvious in the summer
E)

excess nutrients from fertilizers
Diff: 2
Objective:

7.3 Human impacts on systems and cycles

5)

The physical, abiotic components of our planet can be divided into the ________. A)

geosphere and atmosphere
B)

lithosphere, hydrosphere, and atmosphere
C)

lithosphere, biosphere, and atmosphere
D)

lithosphere, hydrosphere, biosphere, and atmosphere
E)

centrosphere, geosphere, biosphere, and abiosphere
Diff: 2
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors

6)

A natural ecosystem, undamaged by human activity, is ________. A)

a closed system of organic materials and energy; everything is recycled B)

an open system of organic materials and energy
C)

an open system of organic and inorganic materials and energy D)

a closed system of organic and inorganic materials and energy; everything is recycled E)

an open system of inorganic materials and energy
Diff: 2
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors
7)

The swamplands of extreme southern Louisiana, which contain elements of both the forests and the coast, could be called ________. A)

a superbiome
B)

an ecotone
C)

a dead zone
D)

a closed ecosystem
E)

an abiotic system
Diff: 2
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors

8)

A small section of prairie grasses, over a year, produces enough biomass to feed insects, mice, rabbits, birds, deer, antelope, and a host of decomposers. The amount of food potentially available to the herbivores is the ________. A)

net primary production
B)

gross primary production
C)

secondary production
D)

productivity
E)

food chain
Diff: 2
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors

9)

The rate at which biomass becomes available to consumers is termed ________. A)

gross primary production
B)

ecosystem productivity
C)

grossulosity factor
D)

net density
E)

net primary productivity
Diff: 2
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors

10)

The biosphere consists of the...
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