Marine organisms and classification — IGCSE Marine Science (0697) questions by topic
This set of 9 questions asks you to state characteristic features of crustaceans from a photograph of shrimps, give the function of a cell wall in seagrass, or explain how migration fits a leatherback turtle's life cycle, worth between 8 and 15 marks.
State, explain, describe, calculate and identify test both recall and application to the specific organism shown. Drawn from 2024 and 2025 papers, this page's instant marking suits the precise terminology this topic demands: checking each answer against the mark scheme catches a vague or partly-correct biological term straight away, rather than letting it repeat across every classification question you attempt.
May–June 2025, Paper 12
Fig. 5.1 shows a manatee eating seagrass underwater. Seagrass cells have cell walls. State one function of the cell wall.
Answer this question and get it marked →May–June 2025, Paper 22
Fig. 1.1 shows shrimps on sale at a fish market (a black-and-white photograph of a pile of whole shrimps with a 5 cm scale bar). Shrimps are crustaceans. State two main…
Answer this question and get it marked →Female leatherback turtles lay eggs in nests on sandy shores. Fig. 6.1 shows eggs in a turtle nest (a photograph of several rounded white turtle eggs partly covered in sand inside…
Answer this question and get it marked →May–June 2025, Paper 23
Fig. 1.1 shows shrimps on sale at a fish market. Shrimps are crustaceans. State two main characteristic features of crustaceans.
Answer this question and get it marked →Female leatherback turtles lay eggs in nests on sandy shores. Fig. 6.1 shows eggs in a turtle nest. Explain the role of migration in the life cycle of the leatherback turtle.
Answer this question and get it marked →October–November 2024, Paper 12
Fig. 4.1 shows a plant cell. Four structures are labelled A, B, C and D with answer lines, and the mitochondria are already labelled. A points to a dark oval structure, B to a…
Answer this question and get it marked →October–November 2024, Paper 13
Fig. 4.1 shows a plant cell. Four structures are labelled A, B, C and D with answer lines, and the mitochondria are already labelled. A points to a dark oval structure, B to a…
Answer this question and get it marked →October–November 2024, Paper 22
Fig. 6.1 shows some kelp — a large brown seaweed photographed underwater, showing blades, gas bladders and a stipe. State the kingdom in which kelp is classified.
Answer this question and get it marked →October–November 2024, Paper 23
Fig. 6.1 shows some kelp — a large brown seaweed photographed underwater, showing blades, gas bladders and a stipe. State the kingdom in which kelp is classified.
Answer this question and get it marked →