WorksheetsEcology Review
Total questions: 32
Worksheet time: 15mins
Name
Class
Date
1.
Communities are made up of
a)
populations
b)
ecosystems
c)
species
d)
biomes
2.
What do we call each step in a food web or chain?
a)
tropical level
b)
trophic level
c)
topical level
d)
trophy level
3.
Which of the following is an example of a biotic factor?
a)
temperature
b)
soil
c)
evergreen tree
d)
weather
4.
What level consumer is the frog?
a)
1st
b)
2nd
c)
3rd
d)
4th
5.
What is one way that population can increase?
a)
the death rates are higher than the birth rates
b)
immigration is higher than emigration
c)
birth rates stay the same
d)
emigration is higher than immigration
6.
When can logistic growth occur?
a)
when the population is very low
b)
before exponential growth
c)
when the population is very high
d)
after exponential growth
7.
When an ecosystem has reached the maximum amount of organisms it can hold, it has reached it's
a)
carrying capacity
b)
logistic growth level
c)
exponential growth level
d)
immigration level
8.
What is the smallest biological level where we can see both living and non living things
a)
populations
b)
communities
c)
ecosystems
d)
biomes
9.
A clown fish lives in the stinging tentacles of a sea anemone for protection. This is
a)
mutualism
b)
commensalism
c)
parasitism
10.
What is one organism you can remove from the web that will have the greatest negative effect?
a)
rabbits
b)
plants
c)
fox
d)
toads
11.
Which of the following is a niche?
a)
a squirrel lives in a tree
b)
the ocean is home to many animals
c)
hyenas are the scavengers of the savanna
d)
great white sharks prefer colder waters
12.
When organisms are in competition, what are they competing for?
a)
food
b)
shelter
c)
a mate
d)
all of the above
13.
What % of energy is passes through a food chain?
a)
1%
b)
10%
c)
100%
d)
none
14.
How does matter flow through an ecosystem differently than energy?
a)
energy is recycled, matter flows in one direction
b)
they are both recycled
c)
matter gets used up and energy flows in one direction
d)
energy flows in one direction and matter is recycled
15.
What do density dependent factors depend on?
a)
resources
b)
population size
c)
food chains
d)
energy flow
16.
Which of the following is an example of a a density independent limiting factor?
a)
unusual weather
b)
competition
c)
predation
d)
disease
17.
The grass has 100% energy. How much energy from the sun will the snake have?
a)
10%
b)
1%
c)
.1%
d)
.01%
18.
Which type of succession occurs when an ecosystem attempts to restore itself?
a)
primary
b)
secondary
19.
True or False: 2 species can share the same niche in the same habitat at the same time.
a)
True
b)
False
20.
If the predator decrease the prey population will?
a)
Increase
b)
Decrease
21.
What are the levels of ecological organization from largest to smallest
a)
Organism, Population, Community, Ecosystem, Biosphere
b)
Biosphere, Ecosystem, Community, Population, Organism
c)
Organism, Biosphere, Community, Ecosystem, Population
d)
Biosphere, Organism, Community, Ecosystem, Population
22.
What is a niche?
a)
an organism that eats plants and animals
b)
An organisms way of life within an ecosystem
c)
competition
d)
a symbiotic relationship where both organisms benefit
23.
The competitive exclusion principal states that
a)
One species can live in one habitat.
b)
One species can live in one niche.
c)
One organism can live anywhere
d)
Cool kids exclude non-cool kids from their lunch table.
24.
What is Symbiosis?
a)
When an organism has aged
b)
The interaction of different organisms in an environment
c)
An organism that does not interact with others
d)
The birth of an organism
25.
Which of the following is not symbiosis ?
a)
Commensalism
b)
Symbiosm
c)
Mutualism
d)
Parasitism
26.
What limits Population Growth?
a)
Birth rates increasing
b)
Resources being used up
c)
natural selection taking place
d)
none of the above
27.
Density-independent limiting factors to population growth include
a)
stress from overcrowding
b)
natural disasters
c)
parasitism
d)
competition
28.
How many trophic levels are present in this food web?
a)
2
b)
3
c)
4
d)
5
29.
What percent of energy is lost at every trophic levels.
a)
90%
b)
10%
c)
100%
d)
0%
30.
The arrows on a food web...
a)
...show who is the prey.
b)
...shows who is the predator.
c)
...shows the direction the energy is moving to
31.
Which of the following processes REMOVES carbon from the atmosphere?
a)
Respiration
b)
Auto Emissions
c)
Photosynthesis
d)
Decomposing organisms
32.
What process turns nitrogen gas into ammonia in the soil via bacteria?
a)
Nitrogen Fixation
b)
Ammonification
c)
Denitrification
100 %
