AS & A Level Marine Science (9693) — May–June 2025, Paper 11
8 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Carbon, hydrogen and oxygen are used to make many important biological molecules. Complete Table 1.1 by stating one other essential element required to make each biological…
Answer this question and get it marked →Fig. 2.1 shows kelp, a macroalga. Structure A is labelled at the base of the kelp where it attaches to the substrate. State the name and suggest the function of the part labelled…
Answer this question and get it marked →Water is a solvent. Draw a diagram to show the covalent bonding within a water molecule. Show the electron arrangement in the outer shells.
Answer this question and get it marked →Fig. 4.1 shows a diagram of an estuary viewed from above. Fig. 4.2 shows how the salinity changes at location X in the estuary during a 24-hour period. Fig. 4.1 is a map of an…
Answer this question and get it marked →Primary productivity was continuously measured in two parts of an ocean in the southern hemisphere for a year. Fig. 5.1 shows the results. Fig. 5.1 is a line graph showing primary…
Answer this question and get it marked →Rocky shore ecosystems contain different zones. Rocky shore organisms show different distribution and abundance across the zones. Fig. 6.1 shows this zonation. Fig. 6.1 is a…
Answer this question and get it marked →Describe how underwater volcanoes form close to convergent plate boundaries.
Answer this question and get it marked →Discuss the structure of a typical coral polyp. Describe the function of each structure. You can include a diagram.
Answer this question and get it marked →