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WorksheetsCycles of matter wksh
Total questions: 20
Worksheet time: 10mins
What converts nitrogen gas into a usable form for plants and animals?
bacteria
rain
fungi
car exhaust
The process in which nitrogen circulates and is recycled is called
The nitrogen cycle
The carbon cycle
The water cycle
The phosphorus cycle
How is nitrogen "fixed" into a usable form for plants?
Through action of bacteria only
Through lightning only
Through action of bacteria and lightning
Through photosynthesis
What is the process that converts nitrogen into a form that can be used by plants and animals?
In the carbon cycle, animals can release carbon back into the cycle through __________ or through __________.
burning . . . photosynthesis
fixation . . . decomposition
decomposition . . . photosynthesis
respiration . . . decomposition
respiration . . . photosynthesis
What is the formula for atmospheric nitrogen?
N
N2
NH3
NO3
A correct path that nitrogen could take would be
air -> animals -> plants -> bacteria
animals -> air -> bacteria -> plants
bacteria -> air -> plants -> animals
air -> bacteria -> plants -> animals
The nitrogen cycle includes ___________. (Pick 3)
the atmosphere
the sun
the animals
the soil
Where does nitrogen goes once it is in the soil?
stems of plants
leaves of plants
roots of plants
flowers of plants
What part of the roots are these nitrogen fixing bacteria found?
roots caps
legumes
root fibers
meristems
_________ can also fix nitrogen gas for plants.
Lightning
People
Animals
Viruses
Animals get nitrogen by ____________.
breathing air
eating plants
dying
being struck by lightning
Living organisms need Nitrogen to make which of the following?
Glucose
Proteins
Sunlight
Ultraviolet Radiation
