ET-Nitrogen Cycle

Front

How is nitrogen fixed in the environment?

Back

Bacteria in the soil and lightning in the atmosphere “fix” the nitrogen

Front

How do animals get the nitrogen they need?

Back

From the food they eat.

Front

Organisms that need nitrogen to survive

Back

all living organisms

Front

Bacteria fix nitrogen on plant roots. Plant roots provide sugar to bacteria. This is an example of: mutualism, parasitism, commensalism, competition

Back

mutualism

Front

Nitrogen rich fertilizers and manure can cause water pollution.

Back

True

Front

How nitrogen is "fixed" into useable form for plants

Back

through action of bacteria & lightning

Front

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

Back

air -> bacteria -> plants -> animals

Front

Bacteria that change the nitrates back into nitrogen gas that is then released back into the atmosphere.

Back

Denitrifying

Front

Certain bacteria and fungi called ________ convert nitrogen in dead plants and animals into ammonia.

Back

decomposers

Front

According to this diagram, plants absorb: nitrates, nitrogen fixing bacteria, animals, decomposers

Back

nitrates