Nitrogen cycle

Nitrogen cycle

Multiple Choice

What is the percentage of the Nitrogen in the air ?

• 1%

• 21%

• 78%

Multiple Choice

Organisms require nitrogen to make which of the following?

• Glucose

• Proteins

Multiple Select

Choose the plants that are examples of legume?

• Strawberries

• Peas

• Beans

• Clover

Multiple Choice

How nitrogen is "fixed" into useable form for plants...

• Through action of bacteria only

• Through lightning only

• Through action of bacteria & lightning

Multiple Select

True or False: Bacteria fix nitrogen from the atmosphere into a form plants can use

• True

• False

Multiple Choice

True or False:

Bacteria create a form of nitrogen that ANIMALS can use directly

• True

• False

Multiple Choice

What would happen to the plants in this nitrogen cycle if all the bacteria died?

• They would not get the nitrogen they need.

• They would get their nitrogen directly from the atmosphere

Multiple Choice

True or False:

Bacteria release nitrogen from dead organisms into the soil.

• True

• False

Multiple Choice

A correct path that nitrogen could take would be _____

• air -> animals->plants->bacteria

• air -> bacteria ->plants -> animals