Cambridge IGCSE · Marine Science (0697)

Fisheries: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Fisheries.

10 questions23 marksFree, no account

Question 1

1 mark

What is a primary social and economic importance of marine organisms to human populations?

Question 2

1 mark

What is the primary function of sonar as a navigational aid in modern commercial fisheries?

Question 3

1 mark

Why is purse seine fishing generally considered to have a lower direct impact on the physical seafloor habitat compared to beam trawling?

Question 4

1 mark

Which fishing method involves the use of a single long horizontal main line with many shorter, baited branch lines attached at regular intervals?

Question 5

1 mark

Trawling is a fishing method that involves dragging a net along the seabed or through the water column. What is the major environmental impact associated with beam trawling?

Question 6

2 marks

Identify one type of netting used in commercial fisheries that is specifically designed to encircle a school of fish at the surface and then close at the bottom like a drawstring bag.

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Question 7

3 marks

Explain how the use of sonar serves as a vital navigational and fishing aid for modern fishing vessels.

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Question 8

5 marks

Evaluate the ecological impact of using Fish Aggregating Devices (FADs) in open-ocean fisheries.

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Question 9

3 marks

Modern fisheries rely on various technologies and management techniques to harvest marine organisms effectively. Use your knowledge of fishing practices and sustainability to answer the following questions.

(a) State the primary purpose of a nautical chart as a navigational aid for a fishing boat. (1 mark)

(b) Identify one method of trapping fish or crustaceans that does not involve the use of a large net. (1 mark)

(c) Explain how the issuance of fishing licences helps authorities manage a local fishery. (1 mark)

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Question 10

5 marks

Maintaining sustainable fisheries is essential for global food security and the health of marine ecosystems.

(a) Explain how sustainable harvesting ensures that fish stocks remain available for future generations. (2 marks)

(b) Describe the function of sonar and GPS as navigational aids in commercial fishing. (3 marks)

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