Phytoplankton

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Phytoplankton
Canada's Aquatic Environment
University of Guelph

Introduction
Algae, like higher plants, obtain energy by photosynthesizing; essentially producing their food by capturing the energy form the sun. Many algae store energy in the form of starch. Other algae use other compounds and distinction between some algae groups is based upon which compound that they use to store energy. For example, Rhodophyta (red algae) store energy in the form of floridean starch, whereas the Phaeophyceae (brown algae) store their energy in the form of laminarin.

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