They are usually green due to the dominance of chlorophyll A and B. The pigments present in green algae are chlorophyll a, chlorophyll b, beta- carotines and xanthophyll The chloroplast may be discoid, cup-shaped, spiral or ribbon shaped in different species. read more
The sexual reproduction shows considerable variation in the type and formation of sex cells and it may be isogamous, anisogamous or oogamous. read more