Multiple choice

Iodine is obtained from

  1. red algae

  2. blue-green algae

  3. brown algae

  4. epidermis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Brown algae (Phaeophyta) like Laminaria and Fucus are rich sources of iodine, concentrated in their cell walls. Red and blue-green algae lack significant iodine content. 'Epidermis' in option D is anatomical nonsense in this context.

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