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WorksheetsNitrogen cycle
Total questions: 16
Worksheet time: 14mins
According to this diagram, plants use nitrogen to make ________
bacteria
proteins
animals
decomposers
According to this diagram, animals get proteins from eating ______________
decomposers
bacteria
plants
sunlight
According to this diagram, plants absorb ______________
nitrates
animals
nitrogen fixing bacteria
decomposers
Both plants and animals use nitrogen to make _________ and __________
nitrates and lightning
proteins and DNA
water and air
gas and liquids
A correct path that nitrogen could take would be _____
air -> animals->plants->bacteria
animals->air->bacteria->plants
air -> bacteria ->plants -> animals
bacteria ->air -> animals->plants
True or False: Bacteria fix nitrogen from the atmosphere into a form plants can use
True
False
True or False:
Bacteria release nitrogen from dead organisms into the soil
True
False
True or False:
Bacteria create a form of nitrogen that animals can use directly
True
False
True or False:
Bacteria kill plants so that animals may use the nitrogen in an ecosystem
True
False
Nitrates are poisonous to fish. What should you add more of to get rid of nitrates without having to change the water in your fish tank?
More fish
Nitrobacter bacteria
Nitrosomonas bacteria
Plants
What would happen to this nitrogen cycle if a virus killed all the bacteria?
Nitrogen would just keep on cycling
The cycle would stop
Plants would take over for the bacteria
Fish would grow more because there's no bacteria
What would happen to the plants in this nitrogen cycle if all the bacteria died?
They would not get the nitrogen they need to make DNA and proteins
They would get their nitrogen from eating animals
They would get their nitrogen from the atmosphere
They would turn the poop into fish food
What would happen to the animals in this aquarium if all the bacteria died?
They would live longer because the bacteria couldn't harm them
They would die because there would be excess ammonia in the tank.
They would just move to another tank
They would start eating their own poop to clean the tank
Dead plants, animals, and animal waste are converted to ammonium by _____________________
plant roots
lightning
bacteria and fungi decomposers
denitrifying bacteria
To have less nitrite in this cycle, you would need to have _______________________
Fewer plants
More nitrosomonas or less nitrobacter
Less nitrosomonas or more nitrobacter
More of all the bacteria
To have less nitrate in this cycle you would have to have _________________________
More plants or more nitrobacter
More plants or more nitrosomonas
More plants or less nitrobacter
Less nitrobacter and fewer plants
