AS & A Level Marine Science (9693) — October–November 2023, Paper 32

7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.

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Question 1 · 8 marks · Animal cell and seagrass

Fig. 1.1 shows an animal cell from a marine organism as seen under an electron microscope. Use Fig. 1.1 to complete Table 1.1 by matching the function of each structure with the…

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Question 2 · 10 marks · Mauritius oil spill

In July 2020, an oil tanker ran aground on coral reefs just off the coast of Mauritius in the Indian Ocean. The ship began leaking oil and broke apart in August. The site is close…

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Question 3 · 13 marks · Arctic / beluga whales / methane

One effect of increasing global temperatures can be seen in the Arctic. Sea ice covers part of the Arctic. The area of sea ice increases to a maximum during the Arctic winter, and…

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Question 4 · 14 marks · Antarctic krill and CCAMLR

Antarctic krill feed on phytoplankton. Krill are prey for fish, squid, and several species of whale. They also provide food for seals and penguin colonies, which breed onshore.…

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Question 5 · 9 marks · Osmoregulation in tuna

Explain why and how osmoregulation occurs in tuna.

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Question 6 · 15 marks · Conservation — UNESCO biosphere reserves and kelp forests

Describe the role of UNESCO biosphere reserves in conservation.

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Question 7 · 6 marks · Disease management in aquaculture

Disease management is one of the factors required for the long-term success of an aquaculture project. Explain the need for disease management and describe the different methods…

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