Write  four differences between chlorophyceae and rhodophyceae​

Chlorophyceae

• Commonly called green algae

• May be unicellular, colonial, or filamentous

• Grass green in colour due to abundance of chlorophyll a and b

• Chloroplast of most of the Chlorophyceae contains pyrenoids.

• Pyrenoids − Storage bodies containing proteins in addition to starch

• Food storage occurs in the form of oil droplets in some algae.

• Cells have rigid cell wall: inner layer made of cellulose, outer layer made of pectose

• Examples include Volvox, Chara, Chlamydomonas.

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Rhodophyceae (Red algae) 
 

• Commonly called red algae due to the presence of red pigment, r-phycoerythrin

• Mainly marine forms with bulk mass inhabiting warmer areas

• Occur in well-lighted regions i.e., close to the surface of water and also in deeper areas

• Red thalli of most of these species are multicellular. Some have complex body organization.

• Food is stored as Floridian starch similar to amylopectin and glycogen in structure. 
  
  Example − Polysiphonia, Gelidium, Gracilaria, Porphyra