Question

Iodine is obtained from the members of ______________.

• A. Green algae
• B. Brown algae
• C. Red algae
• D. Blue-Green algae

Answer 1

The correct option is B

Brown algae

The correct option is B:

Explanation of the incorrect option:

1. Brown algae is a good supplier of potassium and iodine.
2. Fucus and Laminaria are two brown algae that are high in iodine.
3. Brown algae are most commonly seen in maritime habitats, where they provide as both food and possible habitat.
4. Brown algae belong to the Phaeophyceae family.

Explanation of the incorrect option:

Option A:

1. The Chlorophyta and Charophyta/Streptophyta algae belong to a vast and informal category of algae known as green algae.
2. These are now grouped together with the more primitive Mesostigmatophyceae, Chlorokybophyceae, and Spirotaenia.

Option C:

1. Rhodophyta, or red algae, is one of the first groups of eukaryotic algae.
2. It is also one of the most diverse phyla of algae, with over 7,000 currently recognised species.

Option D:

1. The phylum Cyanobacteria (also known as Cyanophyta) includes both free-living photosynthetic bacteria and endosymbiotic plastids.

Final answer: Iodine is obtained from the members of brown algae.