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WorksheetsEcology Review
Total questions: 30
Worksheet time: 30mins
Name
Class
Date
1.
The amount of energy that usually transfers from one trophic level to the next...
a)
10%
b)
20%
c)
80%
d)
50%
2.
The living portions of the ecosystem.
a)
Biotic factors
b)
Abiotic factors
3.
A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.
a)
Population
b)
Community
c)
Habitat
d)
Ecosystem
4.
As you move upward, from level to level, in an energy pyramid, energy _____.
a)
increases
b)
decreases
c)
stays the same
d)
increases exponentially
5.
What are the Abiotic factors in this image?
a)
water, sunlight, dirt, air
b)
birds and plants
c)
birds, water, dirt
d)
plants, water
6.
which symbiosis is this
a)
parasitism
b)
mutualism
c)
commensalism
d)
nonalism
7.
symbiotic relationship in which both organisms benefit
a)
competition
b)
Mutualism
c)
nitrogen fixation
d)
energy pyramid
8.
Water temperature would be an example of ...
a)
A biotic factor
b)
An abiotic factor
9.
Organisms that feed on both living producers and other consumers.
a)
Carnivores
b)
Omnivores
c)
Herbivores
d)
Detritivores
10.
Which is NOT a process of the water cycle?
a)
precipitation
b)
freezing
c)
transpiration
d)
evaporation
11.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
12.
Why do living things need nitrogen?
a)
To get energy
b)
To make amino acids
c)
To make proteins
d)
To make proteins AND amino acids
13.
What happens during the process of nitrogen-fixation?
a)
Nitrogen compounds turn into free nitrogen
b)
Free nitrogen turns into nitrogen compounds
14.
What happens during the process of denitrification?
a)
Nitrogen compounds turn into free nitrogen
b)
Free nitrogen turns into nitrogen compounds
15.
Which is NOT a way that nitrogen compounds are added to the soil?
a)
Decay of dead organisms
b)
Denitrification
c)
Animal waste
d)
Nitrogen-fixation
16.
What is the only process that removes carbon from the atmosphere?
a)
combustion
b)
cellular respiration
c)
photosynthesis
d)
decomposition
17.
Which of the following is known as the "sedimentary" cycle because its reservoir is sedimentary rock?
a)
Sulfur cycle
b)
Nitrogen cycle
c)
Phosphorus cycle
d)
Carbon cycle
18.
Phosphorous is needed in organisms for the production of
a)
ADP and ATP.
b)
Cellular membranes.
c)
Deoxyribonucleic and ribonucleic acids.
d)
All of the answers are correct
19.
What is the carrying capacity of this population?
a)
100
b)
200
c)
300
d)
400
20.
The graph of logistic growth can be described as...
a)
S-shaped
b)
J-shaped
c)
W-shaped
d)
U-shaped
21.
A group of individual organisms of the same species.
a)
Organism
b)
Population
c)
Community
d)
Ecosystem
22.
All of the populations in a particular area.
a)
Organism
b)
Population
c)
Community
d)
Ecosystem
23.
The number of individuals in a population within a specific area
a)
Size
b)
Density
c)
Distribution
d)
Age Structure
24.
Population increases constantly without limits.
a)
Exponential (J curve)
b)
Logistic (S curve)
25.
Population increases until resources limit its growth
a)
Exponential (J curve)
b)
Logistic (S curve)
26.
Largest population size a given environment can sustainably support
a)
Carrying capacity
b)
Density dependent limiting factor
c)
Density independent limiting factor
d)
Biotic potential
27.
Affect the size of a population and its growth based on the number of individuals in an area
a)
Carrying capacity
b)
Density dependent limiting factor
c)
Density independent limiting factor
d)
Biotic potential
28.
Affect the size of a population and its growth regardless of the number of individuals in an area
a)
Carrying capacity
b)
Density dependent limiting factor
c)
Density independent limiting factor
d)
Biotic potential
29.
Disease
a)
Density dependent limiting factor
b)
Density independent limiting factor
30.
Natural disaster
a)
Density dependent limiting factor
b)
Density independent limiting factor
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