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