The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid and filamentous forms, and macroscopic, multicellular seaweeds. In the Charales, the closest relatives of higher plants, full cellular differentiation of tissues occurs.reen algae have chloroplasts that contain chlorophyll a and b, giving them a bright green color, as well as the accessory pigments beta carotene and xanthophylls, in stacked thylakoids. The cell walls of green algae usually contain cellulose, and they store carbohydrate in the form of starch.
inaccessibility definition: Noun (uncountable) 1. The quality or state of being inaccessible; inaccessibleness.Origin From Middle French inaccessibilitÃ©...
Extensibility(noun) the quality of being extensible; the capacity of being extended; as, the extensibility of a fiber, or of a plate of metal.