AS & A Level Marine Science (9693) — May–June 2025, Paper 12
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 shows part of a red mangrove tree, Rhizophora mangle. A propagule is labelled in a photograph of leaves and stems hanging over water. Rhizophora mangle reproduces using…
Answer this question and get it marked →Sodium chloride is the most abundant salt in sea water. Fig. 2.1 shows the subatomic particles in an atom of sodium, shown as a diagram with a nucleus surrounded by electron…
Answer this question and get it marked →Name the zone in the open ocean that includes the ocean floor.
Answer this question and get it marked →Fig. 4.1 shows a keyhole limpet. The limpet is shown in a photograph, a rounded dome-shaped shell with a small hole at the top, attached to a rocky substrate. The keyhole limpet…
Answer this question and get it marked →Describe the structures and methods that coral polyps use to obtain their nutrition.
Answer this question and get it marked →Fig. 6.1 shows two water molecules. Bond X is labelled between the two molecules (shown as a dotted line between an oxygen of one molecule and a hydrogen of the adjacent…
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