WorksheetsEcology
Total questions: 30
Worksheet time: 19mins
Name
Class
Date
1.
Members of a species in a defined area are called a
a)
Predation
b)
Population
c)
Competition
d)
Community
2.
All the organisms in a particular location and their non-living environment are called a(n)
a)
decomposer
b)
community
c)
consumer
d)
ecosystem
3.
An organism that makes its own food by using sunlight or chemicals (also known as an autotroph) is called a
a)
producer
b)
predator
c)
consumer
d)
detrivore
4.
Two organisms that are so similar they can interbreed and produce fertile offspring are from the same
a)
species
b)
symbiosis
c)
niche
d)
habitat
5.
Any living (or once living) factors or organisms in an ecosystem is called a(n)
a)
biodiversity
b)
biotic factor
c)
abiotic factor
d)
biosphere
6.
The study of interactions between organisms and their environment is known as
a)
ecology
b)
biome
c)
biology
d)
ecosystem
7.
The populations of different organisms living in a defined area are all part of the same
a)
competition
b)
commensalism
c)
community
d)
population
8.
An organism that relies on other organisms for food (another name for a consumer)
a)
autotroph
b)
detrivore
c)
heterotroph
d)
producer
9.
The series of steps in which organisms transfer energy by eating and being eaten
a)
food chain
b)
acid rain
c)
symbiosis
d)
biomass
10.
A non-living factor that affects an ecosystem is called
a)
biotic factor
b)
biodiversity
c)
biosphere
d)
abiotic factor
11.
A single step in a food chain, food web, or ecological pyramid
a)
producer
b)
omnivore
c)
detritus
d)
trophic level
12.
The part of the earth that living organisms inhabit is the
a)
biodiversity
b)
biosphere
c)
biome
d)
biotic factor
13.
Where an organism lives is its
a)
habitat
b)
niche
c)
biome
d)
biodiversity
14.
Symbiotic relationship in which one organism benefits and the other organism is not affected
a)
mutualism
b)
community
c)
commensalism
d)
competition
15.
The relationship between two or more species (or individuals) that use the same limited resource, both are negatively affected by the relationship
a)
predation
b)
competition
c)
community
d)
population
16.
Symbiotic relationship in which both organisms benefit
a)
mutualism
b)
population
c)
commensalism
d)
parasitism
17.
Interaction in which one organism hunts, captures, and feeds on another organism
a)
population
b)
parasitism
c)
predation
d)
competition
18.
Symbiotic relationship in which one organism benefits and the other organism is harmed
a)
habitat
b)
parasitism
c)
population
d)
predation
19.
Shallow coastal waters provide an essential habitat to a variety of plants and animals. A small part of a coastal food web is shown. Which organism is a primary consumer?
a)
algae
b)
horseshoe crab
c)
striped bass
d)
soft-shell clam
20.
The diagram represents a food chain. The arrows in the diagram indicate the
a)
return of chemical substances to the environment
return of chemical substances to the environment
b)
order of importance of the various organisms.
c)
direction of energy flow through a series of organisms
d)
direction in which organisms move in the environment.
21.
The many overlapping food chains in an ecosystem make up a(n)__________.
a)
food web
b)
niche
c)
energy pyramid
d)
feeding level
22.
Hummingbirds need large amounts of energy to flap their wings between 60 and 200 times per second. Their wings beat so rapidly that it is difficult to see them move. They often appear suspended in air for extended periods of time without changing their location. Hummingbirds have long bills and grooved tongues to reach into flowers to feed on flower nectar. They also feed on insects. Which term best describes the ecological relationship between hummingbirds and insects?
a)
mutualism
b)
parasite-host
c)
predator-prey
d)
commensalism
23.
According to the food web, which of these supply energy for all the other organisms?
a)
snakes
b)
insects
c)
grasses
d)
cougars
24.
Striped fish are affected by abiotic and biotic factors in the environment. Which of these factors is biotic?
a)
water temperature
b)
mineral nutrients
c)
algae
d)
sediment
25.
On Earth, water cycles through the atmosphere, oceans, land and organisms. By what process does most of the water in plants return to the environment?
a)
evaporation from roots
b)
evaporation from leaves
c)
condensation on the leaves
d)
diffusion from the roots
26.
Refer to the illustration above. Level “A” is composed of
a)
secondary consumers
b)
primary consumers
c)
producers
d)
predators
27.
When an organism dies, the nitrogen in its body
a)
can never be reused by other living things.
b)
is immediately released into the atmosphere.
c)
is released by the action of decomposers.
d)
None of the above
28.
In going from one trophic level to the next higher level,
a)
the number of organisms increases.
b)
the amount of usable energy increases.
c)
the amount of usable energy decreases.
d)
diversity of organisms increases.
29.
Precipitation and evaporation are important components of the
a)
nitrogen cycle.
b)
water cycle.
c)
carbon cycle.
d)
All of the above
30.
Humans are affecting the carbon cycle by
a)
burning fossil fuels.
b)
destroying vegetation that absorbs carbon dioxide.
c)
using electrical labor-saving devices.
d)
All of the above
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