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WorksheetsEcology 6
Total questions: 41
Worksheet time: 31mins
Name
Class
Date
1.
How does carbon dioxide leave the atmosphere and become part of the food chain?
a)
Through transpiration
b)
Through photosynthesis
c)
Combustrion through factory emission
d)
itrogen and Sunlight
2.
How do animals get the carbon they need?
a)
decomposing
b)
combustion
c)
eating plants
d)
breathing it in
3.
What role do animals play in the carbon cycle?
a)
absorb carbon dioxide from the atmosphere
b)
give off carbon dioxide through respiration
c)
combustion
d)
decomposing matter
4.
What is one way that carbon dioxide can be put back into the atmosphere?
a)
Sunlight
b)
Burning of Fossil Fuels
c)
Ocean uptake
d)
Rain
5.
What role do decomposers play in the carbon cycle?
a)
absorb carbon dioxide
b)
release carbon dioxide into atmosphere
c)
return carbon into the soil
d)
combustion
6.
In the carbon cycle, what is the role of volcanic activity?
a)
releases carbon dioxide into the atmosphere into the air
b)
decomposing matter back into the soil
c)
absorbing carbon dioxide from the atmosphere
d)
combustion
7.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
8.
Where do animals get nitrogen from?
a)
from the soil
b)
directly from the air
c)
from water they drink
d)
from plants they eat
9.
What is the most abundant gas in our atmosphere?
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
methane
10.
True/False- Bacteria in the soil convert nitrogen in the atmosphere into a form that plants can use.
a)
True
b)
False
11.
True/False, Plants can use nitrogen directly from the atmosphere.
a)
True
b)
False
12.
Nitrogen in the atmosphere is not available. Free nitrogen has to be changed into a usable form in a process called __
a)
nitrogen fixation
b)
transpiration
c)
precipitation
d)
respiration
13.
What are the two ways nitrogen gas is turned into a form plants and animals can use?
a)
lightning & bacteria
b)
bacteria & worms
c)
lightning & worms
d)
bacteria & fungi
14.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle.
15.
Which nutrient is not cycled through the atmosphere?
a)
carbon
b)
nitrogen
c)
phosphorus
d)
water
16.
How do animals get the phosphorus they need?
a)
decomposing
b)
combustion
c)
eating plants
d)
breathing it in
17.
What role do decomposers play in the phosphorus cycle?
a)
absorb phosphorus
b)
release phosphorus into atmosphere
c)
return phosphorus into the soil
d)
combustion
18.
This is released by the weathering of rock.
a)
Carbon
b)
Oxygen
c)
Phosphorus
d)
Nitrogen
19.
This essential nutrient is needed by living organisms to produce DNA
a)
Water
b)
Aluminum
c)
Phosporus
d)
Calcium
20.
What are the four most important materials needed by living organisms?
a)
water, carbon, oxygen, nitrogen
b)
water, food, oxygen, carbon
c)
water, carbon, nitrogen, phosphorus
d)
water, carbon, food, phosphorus
21.
This is essential to living organisms, it is found in nucleic acid and amino acids.
a)
Nitrogen
b)
Carbon
c)
Water
d)
Phosphorus
22.
This is part of nucleic acids, ATP, and helps form animals' bones and teeth.
a)
Nitrogen
b)
Carbon
c)
Water
d)
Phosphorus
23.
The conversion of nitrate to nitrogen gas is called what?
a)
nitrification
b)
renitrification
c)
denitrification
d)
unnitrification
24.
Where would you find most of the Earth's phosphorous?
a)
In the atmosphere
b)
Underwater
c)
on the Earth's surface
d)
Underground
25.
Which type of bacteria would transform nitrate into nitrogen gas?
a)
nitrogen-fixing
b)
denitrifying
c)
nitrifying
d)
nitrogen-defixing
26.
Bacteria that cause nitrification in the soil cause nitrogen to change from _________ to _________.
a)
nitrogen gas; ammonia
b)
nitrogen gas; organic nitrogen
c)
ammonia; nitrate
d)
nitrate; ammonia
27.
The Haber process is the name we give to the industrial production of
a)
Ammonia
b)
Salt
c)
Sodium Hydroxide
d)
Soap
28.
The 2 MAIN processes which drive the carbon/oxygen cycle are ______.
a)
respiration and combustion
b)
photosynthesis and evaporation
c)
photosynthesis and respiration
d)
photosynthesis and chemosynthesis
29.
Process of nitrogen compounds turning into ammonia is called _____.
a)
ammonification
b)
nitrification
c)
nitrogen fixation
d)
denitrifiaction
30.
Sublimation is
a)
when solid turns into gas
b)
when gas turns into plasma
c)
when liquid turns into gas
d)
when gas turns into solid
31.
Which of the following best describes transpiration?
a)
When water is evaporated from a plant's leaves
b)
When a high amount of precipitation lands on a plant's leaves
c)
When water is absorbed into a plant's roots
d)
When flooding causes plants to be uprooted from the soil
32.
Which best describes percolation / infiltration?
a)
Water that is absorbed into the ground
b)
Water that is absorbed into a plant
c)
Water that flows into a river / lake
d)
All the water that is part of a riverbasin
33.
Water __________ into the soil and rocks from the surface.
a)
Infiltrates
b)
Percolates
c)
Groundwater
d)
Aquifer
34.
What is the process of breaking down the original matter into soil particle?
a)
erosion
b)
deposition
c)
decomposition
d)
weathering
35.
Soils that are found within the rainforests are often extremely nutrient poor due to excessive amounts of precipitation that cause______
a)
leaching
b)
percolation
c)
salinization
d)
desertification
36.
Water slowly filtering through the soil is called_____
a)
infiltration
b)
condensation
c)
percolation
d)
seepage
37.
Which of the following processes converts C6H12O6 to an inorganic molecule CO2
a)
translation
b)
photosynthesis
c)
cellular respiration
d)
excretion
38.
Growing legumes such as alfalfa or soy beans increases
a)
denitrification
b)
nitrogen fixation
c)
ammonification
d)
ammonium oxidation
39.
What forms of nitrogen and carbon can be used by plants?
a)
ammonia and carbon monoxide
b)
ammonia, nitrates, and carbon dioxide
c)
nitrites and carbohydrates
d)
nitrate and carbon monoxide
40.
What happens to the nitrogen excreted by animals?
a)
Nitrates are reabsorbed by the animal.
b)
Nitrogen is converted into ammonia.
c)
Nitrogen is released back into the environment.
d)
Nitrates are converted into proteins.
41.
What is the difference between photosynthesis and respiration in plants?
a)
Photosynthesis converts CO2 to O2, and respiration converts glucose into CO2
b)
Photosynthesis converts O2 to CO2, and respiration converts CO2 into glucose
c)
Photosynthesis converts glucose into CO2, and respiration converts CO2 into O2
d)
Photosynthesis converts CO2 into O2, and respiration converts ammonia into glucose
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