Unit 5 Coral Reefs

_______ & _______ are harmful to corals.

• calcium carbonate & red algae

• dinoflagellates & jellyfish

• sedimentation & excess nutrient runoff

• dinoflagellates & sedimentation

Tags

NGSS.MS-LS2-1

Coral polyps secrete _____________ that creates the structure of the coral reef.

• sediments

• staghorn

• calcium carbonate

• camouflage

A _______ reef forms offshore and has a lagoon between it and the main coast.

• fringing

• barrier

• atoll

• sinking

Clear, well-lit water is needed

• to prevent sediments from accumulating

• to keep parrotfish away

• for photosynthesis to occur

• for coral bleaching

Tags

NGSS.MS-LS1-6

Which is the correct number order for the steps to atoll formation?

(2)VOLCANO BECOMES EXTINCT AND SINKS

(3)REEF GROWS AS LAND SLIPS BENEATH SURFACE

(1)CORALS KEEP BUILDING; LAGOON FORMS WHERE ISLAND ONCE WAS

• 1, 2, 3

• 2, 3, 1

• 3, 1, 2

• 3, 2, 1

Coral bleaching is

• an overgrowth of algae

• when coral polyps reject the dinoflagellates living inside

• a disease that attacks coral

• how marine biologists clean up the coral

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-4

The body form of corals is

• medusa

• polyp

• staghorn

• both polyp & medusa

It's how corals feed.

• by using their tentacles

• food flows into it

• parrotfish bring it food

• it eats the calcium & CO2 from the water

Tags

NGSS.MS-LS2-3

The 2 substances coral need from seawater to make their hard skeletons (2 answers)

• calcium

• polyps

• carbon dioxide

• excess nutrients

Coral reefs are endangered by

• climate change

• overfishing

• pollution

• all of the above

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5