Most coral reefs are

• in warm areas near the shore

• in warm areas away from

  the shore

• in cold areas near the shore

• in cold areas away from

  the shore

A coral reef is made up of thousands of small structures called

• sea stars

• polyps

• sea anemones

• bacteria

A coral polyp is actually

• an animal found in Phylum Cnidaria

• an animal found in Phylum Chordata

• a plant found in Phylum Bryophyta

• a plant found in Phylum Aniospermophyta

Coral polyps are vertebrates.

• TRUE

• FALSE

What do polyps use to capture food

• Calcium carbonate skeleton

• Tentacles

• Mouth

• Zooxanthellae

Coral polyps build their homes out of

• carbon dioxide

• calcium carbonate

• calcium manganese

• carbon monoxide

What percentage of the ocean's sea life lives in coral reefs?

• 10 -15%

• 20%

• 45%

• 25%

What percentage of the ocean is taken up by coral reefs?

• 10-12 percent

• 25 percent

• less than one percent

• more than fifty percent

Zooxanthellae are plants.

• TRUE

• FALSE

Zooxanthellae carryout photosynthesis.

• TRUR

• FALSE