Nitrogen Cycle - Assessment

1.

Multiple Choice

30 sec

1 pt

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

bacteria

rain

fungi

car exhaust

2.

Multiple Choice

30 sec

1 pt

The process in which nitrogen circulates and is recycled is called

The nitrogen cycle

The carbon cycle

The water cycle

The phosphorus cycle

3.

Multiple Choice

45 sec

1 pt

Organisms that need nitrogen to survive.

only plants

only animals

only bacteria

all living things

4.

Multiple Choice

45 sec

1 pt

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

5.

Multiple Choice

45 sec

1 pt

How do animals get the nitrogen they need?

From the air they breathe

From the water they drink

From the food they eat

From the sun

6.

Multiple Choice

1 min

1 pt

Gas that makes up 78% of our atmosphere.

Oxygen

Nitrogen

Hydrogen

Carbon Dioxide

7.

Multiple Choice

45 sec

1 pt

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

nitrogen composition

nitrogen fixation

ammonia

denitrification

8.

Multiple Choice

1 min

1 pt

What is the formula for atmospheric nitrogen?

N

N₂

NH₃

NO₃

9.

Multiple Choice

45 sec

1 pt

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

Assimilation

Fixation

Ammonification

Denitrification

10.

Multiple Choice

45 sec

1 pt

Plants and animals cannot use nitrogen directly from the air.

True

False

11.

Multiple Choice

1 min

1 pt

According to this diagram, plants use nitrogen to make _________________________

bacteria

animals

proteins

decomposers

12.

Multiple Choice

30 sec

1 pt

According to this diagram, plants absorb

nitrates

nitrogen fixing bacteria

animals

decomposers

13.

Multiple Choice

1 min

1 pt

According to this diagram, animals get proteins from eating ________________________

decomposers

bacteria

plants

sunlight

14.

Multiple Choice

45 sec

1 pt

The process that allows organisms to use nitrogen

assimilation

denitrification

fixation

ammonification

15.

Multiple Choice

45 sec

1 pt

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

16.

Multiple Choice

30 sec

1 pt

Bacteria fix nitrogen from the atmosphere into a form plants can use.

True

False

17.

Multiple Choice

45 sec

1 pt

Bacteria create a form of nitrogen that animals can use directly.

True

False

18.

Multiple Choice

45 sec

1 pt

What do free living bacteria in the soil do?

Make clouds

Turn atmospheric nitrogen into nitrates

Make carbon dioxide for plants to go through photosynthesis

Help plants take in water

19.

Multiple Choice

30 sec

1 pt

In the nitrogen cycle, what does label A in the diagram represent?

Gas

Clouds

Carbon dioxide in the atmosphere

Nitrogen in the atmosphere

20.

Multiple Choice

45 sec

1 pt

All plants have nitrogen fixing bacteria in their roots.

True

False

Explore this activity with a free account