Chapter 2:
Principles of Ecology
Practice Test
1.
The branch of biology that deals with the environment and the interactions of organisms in it is __________.
a.
an ecosystem
b.
ecology
c.
natural history
d.
a niche
Hint
2.
Abiotic factors in the environment are all __________.
a.
nonliving
b.
easily measured
c.
the same as dead things
d.
living
Hint
3.
A group of populations that interact in an area is __________.
a.
an ecosystem
b.
a biome
c.
a population
d.
a community
Hint
4.
Lions, birds, snakes and trees are all __________.
a.
biotic factors
b.
part of a niche
c.
in the same food chain
d.
abiotic factors
Hint
5.
Grass --> Grasshopper --> Mockingbird represents __________.
a.
a food chain
b.
an ecosystem
c.
a food pyramid
d.
a food web
Hint
6.
Energy in an ecosystem is used for growth or lost as __________.
a.
biomass
b.
light
c.
heat
d.
death
Hint
7.
Algae, grasses and trees are all __________.
a.
pyramids
b.
decomposers
c.
producers
d.
consumers
Hint
8.
Which chemical cycle uses bacteria to fix gases from the air?
a.
phosphorus
b.
carbon
c.
nitrogen
d.
water
Hint
9.
A trophic level represents a _________.
a.
consumer
b.
feeding level
c.
pyramid
d.
chemical cycle
Hint
10.
If one organism is closely associated with and survives at the expense of another, a __________ relationship exists.
a.
herbivore
b.
commensalistic
c.
parasitic
d.
mutualistic
Hint
11.
The portion of Earth that supports life is the __________.
a.
biosphere
b.
ecosystem
c.
community
d.
individual
Hint
12.
An animal that eats plants and meat is a(n) __________.
a.
carnivore
b.
producer
c.
herbivore
d.
omnivore
Hint
13.
Organisms that break down organic matter are __________.
a.
decomposers
b.
autotrophs
c.
producers
d.
in the plant kingdom
Hint
14.
An organism`s role in its community is its __________, and where it lives is its _________.
a.
role in community; niche
b.
niche; habitat
c.
niche; role in the community
d.
habitat; niche
Hint
15.
Herbivores and carnivores are _________, but plants and algae are __________.
a.
animals; consumers
b.
consumers; decomposers
c.
omnivores; producers
d.
consumers; producers
Hint
