Question
Tabulate the economic importance of algae.
| S. No. | Name of the Algae | Economic importance |
| Beneficial activities | ||
| 1. | Chlorella, Laminaria, Sargassum, Ulva, Enteromorpha | Food |
| 2. | Gracilaria, Gelidiella, Gigartina | Agar Agar - Cell wall material used for media preparation in the microbiology lab. Packing canned food, cosmetic and textile paper industry. |
| 3. | Chondrus crispus | Carrageenan - Preparation of tooth paste, paint and blood coagulant. |
| 4. | Laminaria, Ascophyllum | Alginate ice cream, paints and flame proof fabrics. |
| 5. | Laminaria, Sargassum, Ascophyllum, Fucus | Fodder |
| 6. | Diatom (Siliceous frustules) | Diatomaceous earth- water filters, insulation material and reinforcing agent in concrete and rubber. |
| 7. | Lithophyllum, Chara, Fucus | Fertilizer |
| 8. | Chlorella | Chlorellin -Antibiotic |
| 9. | Chlorella, Scenedesmus, Chlamydomonas | Sewage treatment, Pollution indicators |
| Harmful activity | ||
| 10. | Cephaleuros virescens | Red rust of coffee |
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