University:
York University
Course:
SC/BIOL 2021 | Cell Biology
Academic year:

2019
Views:

120

Pages:

2
Author:

Nick T.

Division: Rhodophyta ★ General Info -Most dominate -No Flagella Pigments called phyubilins (r-phycoerythrin, r- phycocyanin) - Free Floating thylakoids in Chloroplasts Floridean Starch For Food = carpogonia and spermatia (oogamous) Cell walls: Cellulose • Xylans calcification. Sulfated poly-Saccharides →Most Found in brackish / Marine environments used in man made products. * Pigments. Chlorophyll a + d . Accesory pigments: --pnycoerytherin. -r-phycocyanin a+b carotenes and xanthophylls. Thylakoids Concentration of accessory pigments determine color. Food Reserve Floridean Starch. Body Forms branched or unbranched • Flat or Sheet like. Tendrils to attach Calcareous Reproduction May be asexual Sexual reproduction: Alteration of generation. Classification Class: Rhodophycae Subclasses: * Bangiophycidae (about 1% of algae). always uninucleate cells. Single Stellate Chloroplasts Unicellular and multicellular Pit connections are almost entirely absent. Sexual reproduction is usually absent. Porphyra and Bangia. Florideo pnycidae Cells are multinucleate multicellular pits - widespread sex.