Cambridge IGCSE · Marine Science (0697)

Conservation strategies: Practice Questions

5 multiple-choice questions marked as you go, and 4 written questions with worked solutions. All on Conservation strategies.

9 questions25 marksFree, no account

Question 1

1 mark

In marine biology, what term is used to describe the total number of different species that live in a specific area?

Question 2

1 mark

A coastal fishery manages its stocks by setting strict annual limits on the amount of biomass that can be removed. This ensures that the fish population can replenish itself for future generations. What is this strategy called?

Question 3

1 mark

Evaluating conservation strategies is essential for effective marine management. Which statement provides the most accurate assessment of using aquaculture as a strategy to conserve the species richness of wild marine populations?

Question 4

1 mark

Which of the following conservation projects specifically involves growing new corals in a nursery for later introduction to artificial or damaged reefs?

Question 5

1 mark

A marine conservation organization aims to restore a damaged mangrove forest by increasing the population size of a specific endangered species that used to thrive there. Which strategy specifically involves breeding and rearing these organisms in a controlled environment before releasing them into the wild?

Question 6

3 marks

Explain why the culling of invasive species, such as the lionfish, is an important conservation project for maintaining coral reef health.

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Question 7

5 marks

Discuss how the establishment of a Marine Protected Area (MPA) acts as a conservation strategy for both biodiversity and local human communities.

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Question 8

4 marks

Conservation strategies are designed to protect marine biodiversity while allowing for the use of ocean resources.

(a) Describe what is meant by a sustainable activity in the context of marine conservation. (1 mark)

(b) Explain how the following management rules help to ensure that the harvesting of wild marine species remains sustainable:
(i) closed seasons (1 mark)
(ii) licensing (1 mark)

(c) State how aquaculture can be used as a strategy to protect wild fish populations. (1 mark)

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Question 9

8 marks

Conservation strategies are necessary to protect marine biodiversity and ensure the long-term health of the oceans.

(a) Define species richness and explain its importance to the stability of a marine ecosystem. (2 marks)

(b) Evaluate the effectiveness of Marine Protected Areas (MPAs) compared to species-specific conservation projects (such as protecting turtle nest sites). (4 marks)

(c) Explain why culling invasive species, such as the lionfish, is considered a valid conservation strategy. (2 marks)

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