Fisheries and mariculture — AS & A Level Marine Science (9693) questions by topic
Expect data on sandeel shoaling behaviour and predator dependence, the effect of benthic trawling on plaice fishing mortality, and the conditions mangroves need before their replanting can benefit fisheries, with marks running from 7 to 19 across this Marine Science topic.
Suggest, calculate, state, explain and discuss are the top command words: discuss expects reasoning on both sides of an issue, while calculate needs a numerical answer worked from given data rather than an estimate. The page draws on 26 real questions set between 2023 and 2025, and marking each attempt instantly lets you see straight away whether a calculation or a discussed benefit matched what the mark scheme rewarded.
May–June 2025, Paper 41
Fig. 5.1 shows a photograph of Palau, a nation located in the Pacific Ocean. Palau consists of a series of islands surrounded by a range of coral reefs. Reef fish are an important…
Answer this question and get it marked →May–June 2025, Paper 42
Lionfish (Pterois volitans) are an invasive species in the Caribbean Sea. They are not native to the area and have few natural predators. A conservation project in Mexico started…
Answer this question and get it marked →May–June 2025, Paper 43
Lionfish (Pterois volitans) are an invasive species in the Caribbean Sea. They are not native to the area and have few natural predators. A conservation project in Mexico started…
Answer this question and get it marked →May–June 2024, Paper 31
Fig. 2.1 shows two different methods of mussel aquaculture. The mussel life cycle includes metamorphosis. State the meaning of the term metamorphosis.
Answer this question and get it marked →May–June 2024, Paper 32
Outline the conditions required for the formation of a mangrove forest and suggest the benefits of replanting mangroves to fisheries.
Answer this question and get it marked →May–June 2024, Paper 33
Outline the conditions required for the formation of a mangrove forest and suggest the benefits of replanting mangroves to fisheries.
Answer this question and get it marked →May–June 2024, Paper 42
The effect of a no-take zone on the sustainability of fish populations and the income of fishers was investigated in an Indian Ocean fishery near Kenya. The sustainability of fish…
Answer this question and get it marked →May–June 2024, Paper 43
The effect of a no-take zone on the sustainability of fish populations and the income of fishers was investigated in an Indian Ocean fishery near Kenya. The sustainability of fish…
Answer this question and get it marked →October–November 2024, Paper 31
Illegal fishing involves fishing without a licence, fishing in restricted areas or fishing beyond the allowed quota. Satellite technology is used to monitor the movements of…
Answer this question and get it marked →October–November 2024, Paper 32
Illegal fishing involves fishing without a licence, fishing in restricted areas or fishing beyond the allowed quota. Satellite technology is used to monitor the movements of…
Answer this question and get it marked →October–November 2024, Paper 33
Illegal fishing involves fishing without a licence, fishing in restricted areas or fishing beyond the allowed quota. Satellite technology is used to monitor the movements of…
Answer this question and get it marked →October–November 2024, Paper 41
Plaice is a benthic flatfish caught by commercial fishing ships. Plaice gather in breeding areas during breeding seasons. Scientists investigated the effect of benthic trawling on…
Answer this question and get it marked →October–November 2024, Paper 42
Plaice is a benthic flatfish caught by commercial fishing ships. Plaice gather in breeding areas during breeding seasons. Scientists investigated the effect of benthic trawling on…
Answer this question and get it marked →October–November 2024, Paper 43
Plaice is a benthic flatfish caught by commercial fishing ships. Plaice gather in breeding areas during breeding seasons. Scientists investigated the effect of benthic trawling on…
Answer this question and get it marked →May–June 2023, Paper 31
Sandeels in the North Sea are an important food source for many predators including fish, marine mammals and seabirds. Sandeels are a short-lived species which swim in large…
Answer this question and get it marked →May–June 2023, Paper 32
Discuss the impacts of sonar, purse-seine fishing and benthic trawling on populations and habitats of marine organisms.
Answer this question and get it marked →May–June 2023, Paper 33
Discuss the impacts of sonar, purse-seine fishing and benthic trawling on populations and habitats of marine organisms.
Answer this question and get it marked →May–June 2023, Paper 41
Aquaculture is used to produce large quantities of seafood. Describe how salmon are grown to maturity in sea cages, using extensive aquaculture.
Answer this question and get it marked →May–June 2023, Paper 42
Scientists studied two types of fishing: rod-and-line fishing and purse-seine fishing. Table 2.1 shows the catch-per-unit-effort (CPUE) for each fishing method. CPUE is the number…
Answer this question and get it marked →May–June 2023, Paper 43
Scientists compared the sustainability of three different fishing methods for an Indian Ocean fishery. Table 2.1 shows the catch data for the different methods over one year.…
Answer this question and get it marked →October–November 2023, Paper 21
Fig. 3.1 shows a photograph of a red snapper fish. Make a large, labelled drawing of the outline of the fish shown in Fig. 3.1.
Answer this question and get it marked →October–November 2023, Paper 22
Fig. 3.1 shows a red snapper, a fish commonly harvested for human food from coral reefs. Make a large drawing of the red snapper in Fig. 3.1. Do not include the scales.
Answer this question and get it marked →October–November 2023, Paper 23
Fig. 3.1 shows a red snapper, a fish commonly harvested for human food from coral reefs. Make a large drawing of the red snapper in Fig. 3.1. Do not include the scales.
Answer this question and get it marked →October–November 2023, Paper 31
Antarctic krill (Euphausia superba) is a small crustacean that forms the basis of the food web in the Southern Ocean. Fig. 4.1 shows different life stages of Antarctic krill.…
Answer this question and get it marked →October–November 2023, Paper 32
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.…
Answer this question and get it marked →October–November 2023, Paper 33
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.…
Answer this question and get it marked →Other AS & A Level Marine Science topics
- Marine organisms and physiology (58)
- Water and physical oceanography (43)
- Mangroves and coastal ecosystems (37)
- Marine ecosystems and energy flow (36)
- Investigative skills (28)
- Aquaculture (21)
- Human impacts and pollution (16)
- Classification and biodiversity (14)
- Coral reefs (14)
- Earth structure and plate tectonics (12)
- Conservation and management (11)