The newest 11 of 11 written questions. Open one to see it on the real paper.
Name the type of species that can outcompete native species.
See it on the paper →Suggest reasons why the introduction of non-native animal species causes the extinction of other animal species.
See it on the paper →The photograph shows a carp. 6 Suggest two reasons why these carp reduce biodiversity in Australia. Carp were first released into Australian rivers in the 1800s. Australia is a country in Oceania. Before their release, carp were not found in Australia.
See it on the paper →Carp are now the most abundant large fresh water fish in the Murray and Darling rivers in Australia. The bar chart shows the annual catch of carp in the Murray and Darling rivers over a 40-year period. 600 000 500 000 400 000 annual 300 000 catch / kg 200 000 100 000 0 0 5 10 15 20 year 25 30 35 40 In year 4, some carp...
See it on the paper →Suggest reasons why the introduction of non-native animal species causes the extinction of other animal species.
See it on the paper →Explain the impact on the banana plant if all the ants are removed from the food chain.
See it on the paper →Explain why scientists are concerned about the impact of lionfish on the ecosystem of the area. Use the fact sheet to support your answer.
See it on the paper →Describe the distribution of lionfish shown on the map.
See it on the paper →Suggest why spearfishing is a more environmentally friendly method of control compared with using a net.
See it on the paper →Suggest why crofton weed spreads rapidly.
See it on the paper →The fact sheet shows some information about the Alaskan lupine plant. Fact sheet about the Alaskan lupine plant The Alaskan lupine plants have spread to many areas of Iceland. They grow up to 60 cm tall and create a canopy over shorter native plants (plants that grow naturally in Iceland), such as the bilberry plant, w...
See it on the paper →Many candidates knew that the introduction of non-native species would result in competition for space and food.
— Examiner report, May/June 2025, 0680/11 Q8(b)(ii) (Cambridge)
In this question candidates were expected to apply their knowledge to an unfamiliar situation, in this case the release of carp into a new environment. They were usually able to do this successfully, often identifying the risk of predation of existing species and also the competition for existing resources in the locality.
— Examiner report, May/June 2025, 0680/12 Q6(a) (Cambridge)
Candidates were generally able to interpret the scenario and deduce a valid reason for the increase in the numbers of carp caught.
— Examiner report, May/June 2025, 0680/12 Q6(b) (Cambridge)
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