Nitrogen Cycle Quiz

According to the diagram, which terrestrial (land) organisms are able to obtain atmospheric nitrogen?

• Plants

• Herbivores

• Nitrogen-fixing bacteria

• Carnivores

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What transformations must occur before nitrogen from the atmosphere can be used by plants?

• Nitrification and assimilation

• Denitrification and ammonification

• Assimilation and decomposition

• Ammonification and nitrification

Tags

NGSS.MS-LS2-3

What organism changes atmospheric nitrogen into usable nitrogen for plants?

• Decomposers

• Nitrogen-fixing bacteria

• Nitrifying bacteria

• Denitrifying bacteria

Tags

NGSS.MS-LS2-1

What is the role of decomposers in the nitrogen cycle?

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NGSS.MS-LS2-3

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

According to this diagram, plants use nitrogen to make _________________________

• bacteria

• animals

• proteins

• decomposers

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

Tags

NGSS.MS-LS2-3

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

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the formula for atmospheric nitrogen?

• N

• N₂

• NH₃

• NO₃

Plants and animals cannot use nitrogen directly from the air.

• True

• False