Algae

Algae

Algae are simpler in structure than the simplest land plants (mosses). Many types of algae consist of only one cell. Seaweeds are multi-cellular algae and unlike land plants, don’t have roots. They derive their nutrients directly from seawater and use sunlight for photosynthesis. Seaweeds attach to rocks using a ‘holdfast’. If removed from the rocks they cannot reattach.