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Question
Differentiate between the following:
Red algae and Brown algae
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Solution
| Red algae | Brown algae | |
| 1 | Red algae are grouped under the class Rhodophyceae. | Brown algae are grouped under the class Phaeophyceae. |
| 2 | They contain floridean starch as stored food. | They contain mannitol or laminarin as stored food. |
| 3 | They contain the photosynthetic pigments chlorophylls a, d and phycoerythrin. | They contain the photosynthetic pigments chlorophylls a, c and fucoxanthin. |
| 4 | Their cell walls are composed of cellulose, pectin, and phycocolloids. | Their cell walls are composed of cellulose and algin. |
| 5 | Flagella are absent. | Two flagella are present. |
| 6 | Thylakoids are unstaked. | Thylakoids occur in group of three. |
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