Nutrients and Plant Health

Nutrients and Plant Health

Multiple Choice

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

Multiple Choice

Organisms that need nitrogen to survive.

• only plants

• only animals

• only bacteria

• all living things

Multiple Choice

The process in which nitrogen circulates and is recycled is called

• The nitrogen cycle

• The carbon cycle

• The water cycle

• The phosphorus cycle

Fill in the Blanks

Too little

in the soil… Plants have poor or little growth Are yellow in color

Fill in the Blanks

Too little

in the soil… Plants have poor or little growth Stem may turn purple Leaves may have a blue-gray color

Multiple Choice

Bacteria does not use up a lot of oxygen

• TRUE

• FALSE

Multiple Choice

What happens in Eutrophication?

• A massive die-off of organisms due to low oxygen.

• An net increase in oxygen.

• A changing of a land biome from fertilizer.

Multiple Choice

What is the original cause of eutrophication?

• Too many predators

• Too many herbivores

• Excess fertilizer

• Too much oxygen