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The brown algae used in the production of potassium and iodine is:
1. Gelidium
2. Laminaria
3. Sargassum
4. Porphyra

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Correct Answer - Option 2 : Laminaria

The correct answer is Laminaria.

  • Laminaria
    • It is a genus of brown seaweed in the order Laminariales (kelp) comprising 31 species.
    • It contains iodine and is also a rich source of iron and potassium.
    • Laminaria is used in the cervix for ending a pregnancy (abortion) or for childbirth.


 

  • Gelidium
    • It is a genus of thalloid red algae comprising 124 species.
    • It produces tetraspores.
    • Many of the algae in this genus are used to make agar.
  • Sargassum
    • Sargassum is a genus of large brown seaweed that floats in island-like masses and never attaches to the seafloor.
    • The traditional uses of Sargassum include gathering seaweed from beaches, washing the salt out, and spreading it below banana trees as fertilizer.
  • Porphyra
    • It is a coldwater seaweed that grows in cold, shallow seawater.
    • It belongs to the red algae phylum of laver species comprising approximately 70 species.
    • The marine red Algae Porphyra has been cultivated extensively in many Asian countries as an edible seaweed and is extensively used to wrap the rice and fish that compose the Japanese food sushi and the Korean food gimbap.

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