Write four differences between chlorophyceae and rhodophyceae
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Chlorophyceae
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Commonly called green algae
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May be unicellular, colonial, or filamentous
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Grass green in colour due to abundance of chlorophyll a and b
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Chloroplast of most of the Chlorophyceae contains pyrenoids.
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Pyrenoids − Storage bodies containing proteins in addition to starch
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Food storage occurs in the form of oil droplets in some algae.
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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)
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Commonly called red algae due to the presence of red pigment, r-phycoerythrin
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Mainly marine forms with bulk mass inhabiting warmer areas
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Occur in well-lighted regions i.e., close to the surface of water and also in deeper areas
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Red thalli of most of these species are multicellular. Some have complex body organization.
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Food is stored as Floridian starch similar to amylopectin and glycogen in structure.
Example − Polysiphonia, Gelidium, Gracilaria, Porphyra
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