Q.List the classes of algae.

Step 1. F.E. Fritsch classified the algae using pigmentation, type/number/insertion of flagella, reserve food material, thallus structure and mode of reproduction, publishing the scheme in 1935.

Step 2. This scheme recognises eleven classes in total.

Step 3. Listing them: Chlorophyceae (green algae), Xanthophyceae (yellow-green algae), Chrysophyceae (golden algae), Bacillariophyceae (diatoms), Cryptophyceae, Dinophyceae (dinoflagellates), Chloromonadineae, Euglenophyceae, Phaeophyceae (brown algae), Rhodophyceae (red algae) and Cyanophyceae (blue-green algae …

Recall the full list of eleven classes from Fritsch's pigment/flagella/foo …

• Listing only the three classes discussed in detail (Chlorophyceae, Phaeophyceae, Rhodophyceae) and omitting the other eight. …