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

• 10-12 percent

• 25 percent

• less than one percent

• more than fifty percent

What are coral reefs often compared to?

• temperate forests

• organic vegetable gardens

• tropical rainforests

• arid deserts

What percentage of the ocean's biodiversity (different species) live in coral reefs?

• 10 -15%

• 20%

• 45%

• 25%

Tags

NGSS.MS-LS2-5

What causes coral bleaching?

• oil spills

• warmer water temperatures

• overfishing

• red tide

Tags

NGSS.MS-LS2-5

What builds up over time to form a reef?

• Sand
• Coral skeletons
• Fish bones
• Rocks

Coral polyps build their homes out of

• carbon dioxide

• calcium carbonate

• calcium manganese

• carbon monoxide

Planula is the name given to

• Corals that do not build reefs
• Coral larvae
• The coral skeleton
• The coral polyp

Which of these conditions are ideal for coral reefs?

• cold and deep water

• warm and shallow water

• cold and shallow water

• warm and deep water

What symbiotic relationship do corals with another organism that helps them get up to 90% of their energy?

• chemosynthetic bacteria

• photosynthetic algae

• predatory parrotfish

• invasive lionfish

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Coral polyps in a coral colony are:

• all genetically identical

• all share a digestive system

• all share a nervous system

• all answers are correct

Tags

NGSS.MS-LS3-2