Algae: Vegetative Structure
ALGAE
VEGETATIVE STRUCTURE
Thallus- body of algae * Holdfast (root) * Stipe (stem) * Blade (leaf)
Pneumatocyst-gas filled chamber
LIFE CYCLE
Asexual (Fragmentation)
Sexual
NUTRITION
Photoautotrophic
DIFFERENT PHYLA 1. Phaeophyta / Brown A * Kelps * Algin-thickener (ice cream, lotions)
2. Rodophyta / Red A * Deeper * Agar * Carageenan- thickener evap, ice cream, drugs; from Irish Moss * Gracillaria spp.- food source
3. Chlorophyta / Green A * Uni/multi * Cellulosic cell wall * Store starch * Give rise to terrestrial plants a) Desmids- uni c (bananas) b) Spirogyra- filamentous; green strands c) Chlamydomonas- biflagellated; stigma d) Volvox- colonial alga; biflagellated e) Euglena- chloroplast| Algae: Stigma; 1 flagellum; pellicle| Proto: cystostome
4. Baccillariophyta / Diatoms * Cell wall: pectin and silica * Planktonic * Produces DOMOIC ACID * Sediments; diatomaceous earth
5. Dinophyta / Dinoflagellates * Plankton * Fire algae * Alexandrium- red tide * Gambierdiscus toxicus
6. Oomycota / Water Molds * Carry photosynthesis; plant parasites * Phytophora (Potato Blight)
7. Charophyta / Stoneworts * Ancestor of mosses * Chlorophyll a and b
8. Chrysophyta / Golden Algae * Chlorophyll a and c * Accessory pigment: fucoxanthin * Laminarin and chrysolaminarin * Unequal flagella
9. Cyanobacteria (Blue-green algae) * Lacks nucleus * Phycolbilins * Spirulina- high protein dietary supplement
ROLES:
1. Food Chain 2. 80% Earth’s O2 3. Petroleum 4. Symbiosis 5. Decomposition of O2 in H2O
ALGAE as entrée
LAMINARIA
-Kombu (J)
-Hai dai (C)
PORPHYRA
-Nori; Amanori (J)
-Zicai (C)
UNDARIA
-Wakame
ASPARAGOPSIS TAXIFORMIS
-Limu kohu
CODIUM
-Limu wawaeiole
GRATELOUPIA FILCINA
-Limu huluhuluwaena
ULVA
-Limu
VEGETATIVE STRUCTURE
Thallus- body of algae * Holdfast (root) * Stipe (stem) * Blade (leaf)
Pneumatocyst-gas filled chamber
LIFE CYCLE
Asexual (Fragmentation)
Sexual
NUTRITION
Photoautotrophic
DIFFERENT PHYLA 1. Phaeophyta / Brown A * Kelps * Algin-thickener (ice cream, lotions)
2. Rodophyta / Red A * Deeper * Agar * Carageenan- thickener evap, ice cream, drugs; from Irish Moss * Gracillaria spp.- food source
3. Chlorophyta / Green A * Uni/multi * Cellulosic cell wall * Store starch * Give rise to terrestrial plants a) Desmids- uni c (bananas) b) Spirogyra- filamentous; green strands c) Chlamydomonas- biflagellated; stigma d) Volvox- colonial alga; biflagellated e) Euglena- chloroplast| Algae: Stigma; 1 flagellum; pellicle| Proto: cystostome
4. Baccillariophyta / Diatoms * Cell wall: pectin and silica * Planktonic * Produces DOMOIC ACID * Sediments; diatomaceous earth
5. Dinophyta / Dinoflagellates * Plankton * Fire algae * Alexandrium- red tide * Gambierdiscus toxicus
6. Oomycota / Water Molds * Carry photosynthesis; plant parasites * Phytophora (Potato Blight)
7. Charophyta / Stoneworts * Ancestor of mosses * Chlorophyll a and b
8. Chrysophyta / Golden Algae * Chlorophyll a and c * Accessory pigment: fucoxanthin * Laminarin and chrysolaminarin * Unequal flagella
9. Cyanobacteria (Blue-green algae) * Lacks nucleus * Phycolbilins * Spirulina- high protein dietary supplement
ROLES:
1. Food Chain 2. 80% Earth’s O2 3. Petroleum 4. Symbiosis 5. Decomposition of O2 in H2O
ALGAE as entrée
LAMINARIA
-Kombu (J)
-Hai dai (C)
PORPHYRA
-Nori; Amanori (J)
-Zicai (C)
UNDARIA
-Wakame
ASPARAGOPSIS TAXIFORMIS
-Limu kohu
CODIUM
-Limu wawaeiole
GRATELOUPIA FILCINA
-Limu huluhuluwaena
ULVA
-Limu