give the economic importance of algae.

Economic Importance of algae

  • Carbon dioxide fixation on earth is majorly carried out by algae.

  • Important as primary producers of energy-rich compounds.
    Example −
     Sargassum, Laminaria, and Porphyra used as food.

  • Some brown and red algae species produce water-holding hydrocolloids.
    Example − Algin (brown algae) and carrageen (red algae)

  • Agar produced by Gelidium and Gracilaria is used to grow microbes and in preparation of ice creams and jellies.

  • Chlorella and Spirulina are protein-rich unicellular algae, used as food supplements. They are also known as space food.

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