WorksheetsEcological Systems Review
Total questions: 64
Worksheet time: 3hrs 38mins
Name
Class
Date
1.
A(n) __________ includes all living and non-living things in an environment.
a)
population
b)
niche
c)
abitotic
d)
ecosystem
2.
What are interconnected food chains called?
a)
consumers
b)
predators
c)
food web
3.
What would most likely happen if an ecosystem no longer received sunlight?
a)
The number of herbivores would increase
b)
The number of plants would increase
c)
all organisms would adapt
d)
All living organisms would eventually die
4.
All food chains_____________________
a)
have more consumers than producers
b)
produce and use same amount of energy
c)
begin with a producer
d)
are unhealthy
5.
All the members of one species that live within an area of an ecosystem is a?
a)
population
b)
community
c)
niche
6.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
7.
Which are abiotic factors?
a)
fish
b)
humans
c)
rocks
d)
cats
8.
The following is an example of what type of feedback loop?
a)
Negative Feedback Loop
b)
Neutral Feedback Loop
c)
Positive Feedback Loop
d)
Animal Feedback Loop
9.
The following is an example of what type of feedback loop?
a)
Negative Feedback Loop
b)
Neutral Feedback Loop
c)
Positive Feedback Loop
d)
Global Warming Feedback Loop
10.
Rising global temperatures cause snow and ice to melt faster, thus create darker surfaces that will absorb more heat. Identify this type of feedback.
a)
positive feedback
b)
negative feedback
11.
A rise in temperatures can cause more evaporation and clouds. These clouds will, in turn, reflect more incoming radiation. Identify this type of feedback
a)
positive feedback
b)
negative feedback
12.
Negative feedback loops try to maintain
a)
equilibrium
b)
chaos
c)
precession
d)
change
13.
What is a trophic level?
a)
Each level represented within a food chain or web.
b)
Levels of ecosystems that the world is divided into.
c)
Different levels of nutrients present within an organism.
d)
The levels of sunlight an autotroph needs to survive.
14.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them.
b)
They may eat more than one other organism.
c)
This organism gets its energy from multiple sources.
d)
They have no resources available to them.
15.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
16.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source.
17.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
18.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
19.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
20.
The image provided is an example of a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
21.
The image provided is an example of a(n):
a)
Autotroph
b)
Carnivore
c)
Herbivore
d)
Decomposer
22.
The image provided is an example of a(n):
a)
Carnivore
b)
Herbivore
c)
Producer
d)
Autotroph
23.
Example of a decomposer
a)
fungus
b)
mouse
c)
plants
d)
frogs
24.
An organism that gets energy from breaking down dead organisms, non-living material or waste
a)
producer
b)
consumer
c)
decomposer
d)
autotroph
25.
What is the name for the organism that eats the primary consumer?
a)
secondary consumer
b)
tertiary consumer
c)
producer
d)
decomposer
26.
Which of the following food chains shows the correct energy flow left to right?
a)
rabbit-coyote-grass
b)
grass-rabbit-coyote
c)
coyote-rabbit-grass
d)
grass-coyote-rabbit
27.
Organisms that break down dead plants & animals and release nitrogen back into atmosphere...
a)
bacteria
b)
plants
c)
animals
d)
producers
28.
Photosynthesis
a)
absorbs CO2
b)
releases CO2
29.
Respiration
a)
absorbs CO2
b)
releases CO2
30.
Organisms use nitrogen to form
a)
carbohydrates and lipids
b)
proteins and lipids
c)
lipids and nucleic acids
d)
proteins and nucleic acids
31.
Animals obtain the nitrogen they need directly from the
a)
soil in their habitat
b)
air they breathe
c)
plants they eat
d)
bacteria living within them
32.
Plants get the nitrogen they need from...
a)
the atmosphere
b)
the soil
c)
nitrogen fixing bacteria
d)
parasitic relationships
33.
How are burning of fossil fuels and volcanic eruptions similar with respect to their effects on the carbon cycle?
a)
Both remove carbon from the atmosphere.
b)
Both add carbon to the atmosphere.
c)
Both add carbon to the lithosphere.
d)
Both remove carbon from the lithosphere.
34.
What converts nitrogen gas into a useable form for plants and animals?
a)
bacteria
b)
fungi
c)
rain
d)
car exhaust
35.
When nitrogen gas is turned in to a form that plants and animals can use is called
a)
Combustion
b)
Photosynthesis
c)
Decomposition
d)
Nitrogen Fixation
36.
_____ brings phosphorous into our waterways. .
a)
precipitation
b)
runoff
c)
transpiration
d)
condensation
37.
Nitrogen is the main gas in our atmosphere.
a)
True
b)
False
38.
Which is NOT a process of the water cycle?
a)
precipitation
b)
freezing
c)
transpiration
d)
evaporation
39.
Where are nitrogen-fixing bacteria found?
a)
In the soil
b)
Root nodules
c)
In dead things
d)
In the atmosphere
40.
A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?
a)
volatilization
b)
nitrogen fixation
c)
runoff
d)
ammonification
41.
Which of the following is a consequence of excess carbon building up in Earth’s atmosphere?
a)
The amount of breathable oxygen available to living things decreases
b)
Global temperatures change, affecting normal weather patterns.
c)
The amount of solar energy reaching the earth’s surface decreases.
d)
Global air pressure increases making it more difficult for plants and animals to breathe.
42.
Where is most water found on Earth?
a)
glaciers
b)
lakes
c)
rivers
d)
oceans
43.
What cycles through the environment in the hydrologic cycle?
a)
Carbon
b)
Nitrogen
c)
Hydrogen and Oxygen
d)
Sunlight
44.
All of the interacting species within a particular ecosystem
a)
Population
b)
Biome
c)
Organism
d)
Community
45.
An organism that feeds on dead or decaying plant or animal remains
a)
Detritivore
b)
Decomposer
c)
Producer
d)
Consumer
46.
A living thing that portrays the basic characteristics of life
a)
Organism
b)
Population
c)
Community
d)
Ecosystem
47.
Organisms that feed on both living producers and other consumers.
a)
Carnivores
b)
Omnivores
c)
Herbivores
d)
Detritivores
48.
Water temperature would be an example of ...
a)
A biotic factor
b)
An abiotic factor
49.
Mrs. Bush was driving and accidentally hit a squirrel. A vulture noticed this and swooped down to eat the dead squirrel. The vulture is an example of a _______.
a)
producer
b)
scavenger
c)
parasite
d)
decomposer
50.
Some shrimp and crab live and capture food from within the tentacles of giant anemones.
a)
Parasitism
b)
Commensalism
c)
Mutualism
51.
A pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed.
a)
Mutualism
b)
Commensalism
c)
Parasitism
52.
A boxer crab carries a pair of small anemones in its chelipeds, or claws. When approached by a predator, the crab waves the stinging tentacles of the anemones to deter the predator. The anemones benefit from the small particles of food dropped by the crab during feeding.
a)
Commensalism
b)
Mutualism
c)
Parasitism
53.
Corals feed off the byproducts of a microscopic algae living within their own tissue,called zooxanthellae. The photosynthetic activity of the algae is vital to the survival of the coral animals, which use the energy to extract calcium from the seawater and build their calcareous skeletons. The zooxanthellae are protected by the hard coral and obtain plant nutrients from the coral.
a)
Mutualism
b)
Commensalism
c)
Parasitism
54.
A tapeworm needs to eat food that is already digested, so it lives in the intestines of a dogfish shark and derives nourishment from the shark. As a result of the tape worm infestation, the shark is weakened and more vulnerable to disease and predation.
a)
Parasitism
b)
Commensalism
c)
Mutualism
55.
What type of symbiosis? Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
56.
Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
57.
A relationship between two organisms in which one organism benefits and the other is unharmed...
a)
Mutualism
b)
Competition
c)
Parasitsm
d)
Commensalism
58.
A relationship between two organisms in which both organisms benefit.
a)
Mutualism
b)
Competition
c)
Parasitsm
d)
Commensalism
59.
Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.
a)
Predation
b)
Parasitism
c)
Commensalism
d)
Mutualism
60.
a)
1.
Parasitism
b)
2.
Commensalism
c)
3.
Mutualism
61.
(a) is a process in which free nitrogen in the atmosphere is converted into ammonium. Conversion of unusable nitrogen into usable nitrogen.
Choose from the below words
Nitrogen fixation
Primary succession
Secondary succession
Carrying capacity
Trophic level
62.
Match the following cycles with their descriptions.
a)
Oxygen cycle
1.
Includes the process of photosynthesis and respiration
b)
Carbon cycle
2.
Includes the process of decomposition and fossil fuel combustion
c)
Nitrogen cycle
3.
Includes the fixation of nitrogen by bacteria in the soil
d)
Water cycle
4.
Includes the processes of evaporation, condensation, and precipitation
63.
Identify each organism
a)Producer
b)Primary
c)Secondary
d)Tertiary
1
2
3
4
1)
2)
3)
4)
64.
a)Biosphere
b)Organism
c)Population
d)Ecosystem
e)Community
1
2
3
4
5
1)
2)
3)
4)
5)
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