Worksheets3NGS_MEcology_Biogeochemical Cycles
Total questions: 5
Worksheet time: 3mins
Name
Class
Date
1.
What is the primary pathway through which phosphorus enters terrestrial ecosystems in the phosphorus cycle?
a)
Weathering of rocks
b)
Atmospheric deposition
c)
Rainfall
d)
Volcanic eruptions
e)
None of the choices
2.
In the nitrogen cycle, which process converts ammonia into atmospheric nitrogen gas (N2) under anoxic conditions?
a)
Denitrification
b)
Nitrification
c)
Nitrogen fixation
d)
Ammonification
e)
None of the choices
3.
The following are examples of physical transformations except:
a)
Dissolution
b)
Volatilization
c)
Precipitation
d)
Fixation
e)
None of the choices
4.
Which of the following element is cycled extensively in the biosphere?
a)
C
b)
O
c)
Fe
d)
P
e)
S
5.
Which of the following organisms can convert ammonia to nitrite?
a)
Azotobacter
b)
Nitrosococcus
c)
Nitrobacter
d)
Pseudomonas
e)
None of the choices
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