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Biology

CAIE2016

Corals are simple marine animals and usually exist in colonies of thousands of individuals. Fig. 1.1 shows a coral colony. Fig. 1.1 Corals absorb calcium carbonate from the sea to build their skeletons, which help to form large coral reefs. Coral reefs provide a home for about 25% of known fi sh species and have the highest biodiversity of any marine ecosystem. (a) Corals, although they are animals, are sometimes mistaken for members of the plant kingdom. State two ways in which corals differ from plants. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2] © UCLES 2014 9700/04/SP/16 PPMMTT

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