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WorksheetsEcology Part 2 Review
Total questions: 44
Worksheet time: 46mins
Name
Class
Date
1.
A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?
a)
A
b)
B
c)
C
d)
D
2.
In this energy pyramid, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
3.
In an ecological pyramid, which type of organism always has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
4.
How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?
a)
80%
b)
90%
c)
10%
d)
20%
5.
If there are 100 Kcal of energy available in the producers, how much energy would be available in the herbivores?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
6.
In this ecological pyramid which type of consumer gets only 10% of the energy stored in plants?
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Secondary Consumer
7.
If these organisms were arranged in an ecological biomass pyramid, which organism would have the least amount of biomass?
a)
coyote
b)
insect
c)
lizard
d)
shrub
8.
The diagram represents a pyramid of energy in an ecosystem. Which level would most likely contain organisms that do photosynthesis?
a)
A
b)
B
c)
C
d)
D
9.
A tertiary consumer has to be which type?
a)
Carnivore.
b)
Decomposer.
c)
Producer.
d)
Herbivore.
10.
The main difference between the water cycle and all the other biogeochemical cycles is that water_______.
a)
creates completely new substances
b)
is made from matter that has been here since the world was formed
c)
never changes its structural form
d)
is much slower than the other cycles
11.
How does carbon dioxide leave the atmosphere?
a)
Through transpiration
b)
Through photosynthesis
c)
Through factory emission
d)
Sunlight
12.
What is one way that carbon enters the atmosphere?
a)
Sunlight
b)
Factory emissions
c)
Ocean uptake
d)
Rain
13.
Which process converts carbon in the form of sugar into carbon dioxide gas?
a)
Bioremediation
b)
Photosynthesis
c)
Respiration
d)
Transpiration
14.
In the food web, which organisms release the carbon from dead things back into the environment?
a)
Producers
b)
Consumers
c)
Scavengers
d)
Decomposers
15.
When a liquid becomes a gas
a)
transpiration
b)
condensation
c)
precipitation
d)
evaporation
16.
When a gas becomes a liquid
a)
precipitation
b)
evaporation
c)
advection
d)
condensation
17.
On average, how much energy is lost between each trophic level?
a)
0%
b)
10%
c)
90%
d)
100%
18.
Which substance must be chemically transformed before it can be used by plants?
a)
carbon dioxide gas
b)
water vapor
c)
nitrogen gas
d)
groundwater
19.
Converting atmospheric nitrogen into a usable form by bacteria or lightning is known as _______.
a)
nitrogen fixation
b)
denitrification
c)
ammonification
d)
assimilation
20.
The nitrogen found in the atmosphere is not in a form that plants or animals can use. What converts it into a usable form?
a)
Bacteria
b)
Photosynthesis
c)
Decomposition of organisms
d)
Fungi
21.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
This is not a correct diagram of any cycle.
22.
This is released by the weathering of rocks.
a)
Carbon
b)
Oxygen
c)
Phosphorus
d)
Nitrogen
23.
Why do heterotrophs need nitrogen?
a)
making amino acids and proteins
b)
for cellular respiration
c)
for photosynthesis
d)
for the burning of fossil fules
24.
Identify the cycle pictured
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
This is not a correct diagram of any cycle.
25.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
This is not a correct diagram of any cycle.
26.
The process represented by arrow 4 is __
a)
transpiration
b)
precipitation
c)
evaporation
d)
condensation
27.
How do decomposers benefit the carbon cycle?
a)
Dead organic matter is broken down and nitrogen is released into the air.
b)
Carbon is leaked into the air when fossil fuels are burned.
c)
Decaying organisms are essential for carbon to be released back into the food web.
d)
Volcanoes and fires vent large amounts of carbon dioxide into the sky.
28.
What does not produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
29.
How are cellular respiration and photosynthesis related, in terms of energy?
a)
The energy captured in photosynthesis is used to power cellular respiration.
b)
The energy transformed in cellular respiration is used to power photosynthesis.
c)
Photosynthesis and respiration perform the same task in terms of energy transformation
d)
Energy is not involved in either photosynthesis or cellular respiration.
30.
What is this a picture of?
a)
Nitrogen cycle
b)
carbon cycle
c)
water cycle
d)
plant cycle
31.
Where does nitrogen move?
a)
In human bodies
b)
In buildings
c)
Between animals, bacteria, plants, and the atmosphere.
d)
only in the air
32.
What is the abreviation for Carbon Dioxide?
a)
(CO2)
b)
(N2)
c)
(O2)
33.
Denitrifying bacteria feed on _______, releasing nitrogen gas back into the atmosphere.
a)
dead plants and animals
b)
living soil
c)
water
d)
algae
34.
During which phase of the nitrogen cycle do bacteria and lightning strikes convert atmospheric nitrogen into a usable form?
a)
Ammonification
b)
Assimilation
c)
Nitrogen Fixation
d)
Nitrification
35.
During which phase of the nitrogen cycle are nitrates taken up into plant roots?
a)
Ammonification
b)
Assimilation
c)
Nitrificaiton
d)
Denitrification
36.
During which phase of the nitrogen cycle is nitrogen gas returned to the atmosphere?
a)
Ammonification
b)
Nitrogen fixation
c)
Nitrification
d)
Denitrification
37.
Which of the following is a result of chlorofluorocarbon (CFC) usage?
a)
Increased runoff of pesticides into lakes and rivers
b)
Increase levels of atmospheric nitrogen
c)
Depletion of the ozone layer resulting in higher levels of UV radiation
d)
Decreased levels of atmospheric oxygen
38.
Which of the following is not a decomposer
a)
Vulture
b)
Fungus
c)
Worm
d)
Bacteria
39.
What do the carbon and nitrogen cycles ensure (allow)?
a)
human activities have no effect
b)
living organisms will not become limited to one nutrient
c)
nutrients will be circulated throughout the biosphere
d)
nutrients will not reach toxic levels
40.
What happens to the rest of the energy that doesn't move up to the next trophic level?
a)
it's released as heat
b)
it becomes nutrients for soil
c)
it becomes food
d)
it becomes less space
41.
Which of the following would be the definition of a detritivore?
a)
Animals that eat insects.
b)
Organisms that feed on rocks, recycling the nutrients back into the ground.
c)
Organisms that eat only pants
d)
Things that feed on dead organisms, recycling the nutrients back into the ground.
42.
Nitrogen is released from living things when they die in the form of...
a)
Nitrogen gas
b)
Nitrous oxide
c)
Ammonia
d)
Nitrites
43.
Classify the following statement based on their interactions with one another.
Bats hibernating in a cave
Bats hibernating in a cave
a)
two living organisms interacting together
b)
living organism interacting with a non living organism
c)
neither
44.
Classify the following statement based on their interactions with one another.
Sheep grazing grass.
Sheep grazing grass.
a)
Two living organisms interacting
b)
living organism interacting with a non-living organism
c)
neither of these
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