I: | Vegetative reproduction is not seen. |
II: | Asexual reproduction is by flagellated zoospores. |
III: | Sexual reproduction is always oogamous. |
1. | Chlorophyll a and Chlorophyll b are dominant photosynthetic pigments |
2. | Pyrenoids seen in chloroplasts in most |
3. | Cellulosic cell wall |
4. | 2 unequal and lateral flagellar insertions |