2.2[a] Coastal Ecosystems of the World

Question 1

What are coral reefs primarily made of?
○ A) Sand
○ B) Calcium carbonate
○ C) Silica
○ D) Granite

Answer 1

B) Calcium carbonate

Question 2

Which ocean region is known for having the Great Barrier Reef?
○ A) Atlantic Ocean
○ B) Indian Ocean
○ C) Pacific Ocean
○ D) Arctic Ocean

Answer 2

C) Pacific Ocean

Question 3

What is the primary factor controlling the distribution of coral reefs?
○ A) Salinity
○ B) Temperature
○ C) Water depth
○ D) Light

Answer 3

B) Temperature

Question 4

Which type of coral reef forms around a landmass?
○ A) Barrier reef
○ B) Atoll
○ C) Fringing reef
○ D) Patch reef

Answer 4

C) Fringing reef

Question 5

Which coastal ecosystem is characterized by salt-tolerant grasses and bushes?
○ A) Mangrove forest
○ B) Salt marsh
○ C) Seagrass meadow
○ D) Coral reef

Answer 5

B) Salt marsh

Question 6

What is the primary function of mangrove roots?
○ A) Photosynthesis
○ B) Filtering salt
○ C) Stabilizing sediment
○ D) Providing habitat for fish

Answer 6

C) Stabilizing sediment

Question 7

Which coastal ecosystem is found in both tropical and subtropical regions?
○ A) Kelp forest
○ B) Salt marsh
○ C) Mangrove forest
○ D) Coral reef

Answer 7

C) Mangrove forest

Question 8

What is the main threat to coral reefs from climate change?
○ A) Increased salinity
○ B) Rising sea levels
○ C) Ocean acidification
○ D) Decreased sunlight

Answer 8

C) Ocean acidification

Question 9

Which type of coastal ecosystem is known for its high biodiversity and
productivity?
○ A) Estuary
○ B) Salt marsh
○ C) Mangrove forest
○ D) Coral reef

Answer 9

D) Coral reef

Question 10

What is the main role of zooxanthellae in coral reefs?
○ A) Providing structural support
○ B) Photosynthesis
○ C) Predation
○ D) Reproduction

Answer 10

B) Photosynthesis

Question 11

What is the primary cause of coral bleaching?
○ A) Pollution
○ B) Overfishing
○ C) Increased water temperature
○ D) Sedimentation

Answer 11

C) Increased water temperature

Question 12

Which coastal ecosystem acts as a natural barrier against storm surges?
○ A) Seagrass meadow
○ B) Coral reef
○ C) Salt marsh
○ D) Mangrove forest

Answer 12

D) Mangrove forest

Question 13

What is the main benefit of seagrass meadows to marine life?
○ A) Providing food
○ B) Offering shelter
○ C) Stabilizing sediment
○ D) All of the above

Answer 13

D) All of the above

Question 14

Which factor is essential for the growth of coral reefs?
○ A) High nutrient levels
○ B) Clear, clean water
○ C) Deep water
○ D) Low salinity

Answer 14

B) Clear, clean water

Question 15

What is the primary role of estuaries in coastal ecosystems?
○ A) Providing habitat for coral
○ B) Acting as nurseries for fish
○ C) Filtering pollutants
○ D) Both B and C

Answer 15

D) Both B and C

Question 16

Which coastal ecosystem is dominated by large brown algae?
○ A) Coral reef
○ B) Seagrass meadow
○ C) Kelp forest
○ D) Mangrove forest

Answer 16

C) Kelp forest

Question 17

What is the main threat to mangrove forests?
○ A) Overfishing
○ B) Deforestation
○ C) Climate change
○ D) Pollution

Answer 17

B) Deforestation

Question 18

Which coastal ecosystem is found in temperate regions and higher latitudes?
○ A) Mangrove forest
○ B) Coral reef
○ C) Salt marsh
○ D) Seagrass meadow

Answer 18

C) Salt marsh

Question 19

What is the primary function of coral polyps in a reef?
○ A) Photosynthesis
○ B) Building the reef structure
○ C) Filtering water
○ D) Providing food for fish

Answer 19

B) Building the reef structure

Question 20

Which coastal ecosystem is known for its ability to store large amounts of carbon?
○ A) Coral reef
○ B) Mangrove forest
○ C) Seagrass meadow
○ D) Salt marsh

Answer 20

B) Mangrove forest

Question 21

What is the main cause of habitat loss in coastal ecosystems?
○ A) Natural disasters
○ B) Human activities
○ C) Climate change
○ D) Predation

Answer 21

B) Human activities

Question 22

Which coastal ecosystem is formed by flowering underwater plants?
○ A) Coral reef
○ B) Seagrass meadow
○ C) Kelp forest
○ D) Salt marsh

Answer 22

B) Seagrass meadow

Question 23

What is the primary benefit of coral reefs to coastal communities?
○ A) Providing food
○ B) Protecting shorelines
○ C) Supporting tourism
○ D) All of the above

Answer 23

D) All of the above

Question 24

Which factor does NOT affect the distribution of coral reefs?
○ A) Temperature
○ B) Light
○ C) Water depth
○ D) Wind speed

Answer 24

D) Wind speed

Question 25

What is the main role of salt marshes in coastal ecosystems?
○ A) Providing habitat for fish
○ B) Filtering pollutants
○ C) Stabilizing sediment
○ D) All of the above

Answer 25

D) All of the above

Question 26

Which coastal ecosystem is most affected by rising sea levels?
○ A) Coral reef
○ B) Mangrove forest
○ C) Salt marsh
○ D) Seagrass meadow

Answer 26

C) Salt marsh

Question 27

What is the primary function of kelp forests in marine ecosystems?
○ A) Providing food
○ B) Offering shelter
○ C) Stabilizing sediment
○ D) All of the above

Answer 27

D) All of the above

Question 28

Which coastal ecosystem is characterized by its ability to filter pollutants from
water?
○ A) Coral reef
○ B) Mangrove forest
○ C) Seagrass meadow
○ D) Salt marsh

Answer 28

D) Salt marsh

Question 29

What is the main threat to seagrass meadows?
○ A) Overfishing
○ B) Pollution
○ C) Climate change
○ D) Deforestation

Answer 29

B) Pollution

Question 30

Which coastal ecosystem provides essential nursery habitats for many marine
species?
○ A) Coral reef
○ B) Mangrove forest
○ C) Seagrass meadow
○ D) All of the above

Answer 30

D) All of the above