Biological resources - fish

What proportion of the protein in the human diet comes from the ocean?

• 4%

• 10%

• 18%

• 25%

Where are commercially important fish found and why?

• In freshwater lakes due to high biodiversity

• In major fishery zones due to high productivity

• In rivers due to easy access

• In small ponds due to controlled environment

What fish group accounts for the largest commercial harvest?

• Freshwater fish

• Deep-sea fish

• Saltwater fish

• Farmed fish

What is a reduction fishery?

• A fishery that reduces fish population

• A fishery that processes fish into fish meal and oil

• A fishery that focuses on reducing bycatch

• A fishery that reduces fishing costs

How much of the commercial worldwide fish catch is used for reduction?

• 3%

• 10%

• 15%

• 25%

What are the two main types of fish targeted by commercial fishing?

• Pelagic and groundfish

• Freshwater and saltwater fish

• Tropical and arctic fish

• Small and large fish

Where are commercially important fish primarily found?

• In deep ocean trenches

• In the waters of the continental shelves and offshore regions with upwelling

• In freshwater lakes and rivers

• In coral reefs

What was the estimated total world fisheries catch and aquaculture production in 2005?

• 100 million metric tons

• 142 million metric tons

• 200 million metric tons

• 84 million metric tons

What is a reduction fishery?

• A fishery catching fish for direct human consumption

• A fishery catching fish for purposes other than direct human consumption

• A fishery that reduces the number of fish species

• A fishery that focuses on reducing pollution

According to the United Nations Food and Agriculture Organization (FAO), what has the trend been in worldwide commercial fishing since World War II?

• Decreasing steadily

• Increasing steadily

• Remaining constant

• Fluctuating randomly