Refer to the infographic below and answer the questions that follow - NSC Marine Sciences - Question 3 - 2024 - Paper 2
Question 3
Refer to the infographic below and answer the questions that follow.
The Shark Research Institute collects data on Bull Sharks (Carcharhinus leucas) along the South... show full transcript
Worked Solution & Example Answer:Refer to the infographic below and answer the questions that follow - NSC Marine Sciences - Question 3 - 2024 - Paper 2
Step 1
3.1.1 The river is not in flood. Give TWO differences between ZONE A and ZONE C in terms of the water characteristics.
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Answer
The salinity level is higher in Zone C compared to Zone A.
Zone A has less wave action than Zone C.
Step 2
3.1.2 Study the data in the table.
(a) In which zone were more juvenile sharks caught?
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More juvenile sharks were caught in Zone C.
Step 3
3.1.2
(b) Give reasons why more sharks would be caught in the zone named in QUESTION 3.1.2(a).
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Zone C serves as a key breeding ground for juvenile sharks, providing a safe environment for them to grow.
It offers ample food resources, attracting more sharks to the area.
Step 4
3.1.3 Name AND explain how THREE sensory organs, OTHER than eyesight, are used by sharks to navigate upstream.
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Lateral line organ: Detects vibrations and pressure waves in the water, helping sharks sense movement around them.
Nostrils: Used to detect blood and scents in the water, aiding in locating prey and navigation.
Olfactory cells: Allow sharks to pick up chemical signals, guiding them upstream.
Step 5
3.1.4 The residents of the town on the riverbank asked for reasons why the tourists were catching sharks for this research project.
(a) Give evidence from the text to support that this research programme can be considered an environmentally sustainable activity.
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The research program is environmentally sustainable as it involves the catch-and-release method, ensuring that the sharks are not harmed and can continue their life cycle.
Step 6
3.1.4
(b) State TWO ways in which overtourism can be prevented within this research programme.
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Implementing a controlled number of tourists participating in the program to minimize ecological disruption.
Educating tourists about sustainable practices and ensuring adherence to guidelines.
Step 7
3.1.4
(c) How could this type of ecotourism benefit the sharks?
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Ecotourism can lead to increased funding for shark conservation efforts and research, ultimately helping to protect their habitats and promote biodiversity.
Step 8
3.1.5 Motivate whether it is ethical for researchers to conduct this study on sharks.
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It is ethical as the study aims to enhance understanding of shark populations, which can ultimately lead to better conservation strategies, ensuring the species' survival in their natural habitat.
