Algae Flashcards
Where do algae typically exist?
Oceans, rivers, lakes, ponds, brackish waters, snow.
Algae living in snow contains —— pigments aside from chlorophyll, which gives the surrounding snow a distinctive red hue.
Carotenoid pigments
is a diverse group of eukaryotic, photosynthetic lifeforms. it does not share common ancestor and are therefore polyphyletic.
Algae
What does polyphyletic mean?
Polyphyletic refers to organism that do not share common ancestors and are not related to each other.
Giant kelp, brown algae; ————-; Diatoms, Euglenophyta, Dinoflagellates; ———–
Multicellular;Unicellular
Why are most algae ubiquitious near or inside water bodies?
Because algae require a moist or watery environment.
What structural components are not present in algae?
True stem, shoots, leaves, vascular tissues.
T-F: Algae are photosynthetic organisms.
True
T-F: Algae are only unicellular
False: can either be unicellular or multicellular
Why does structures like roots, stems, or leaves are absent in algae?
Algae lacks well-defined body.
Where can you find algae?
Algae are found where there is adequate moisture.
Asexual reproduction occurs by:
Spore formation
T-F: Algae are free-living, although some can form a symbiotic relationship with other organisms.
True
Algal cells are
Eukaryotic
T-F: Algal cell walls consist of mannas, cell wall, and Galatians.
False: mannans, cellulose, and Galatians
Red algae is also called
Rhodophyta
Over how many recognized species with taxonomic revisions ongoing are there in red algae?
7000
Is an informal group of algae with primary photosynthetic pigments, chlorophyll a and b, along with auxiliary pigments xanthophylls and beta carotene.
Green algae
What are the auxiliary pigments of green algae?
Xanthophylls and beta carotene
Lives in freshwater habitats and were first reported by Leeuwenhoek
Volvox
Also called cyanobacteria, lives in moist or aquatic environments, however it fixes nitrogen in the soil. Also called nitrogen-fixing bacteria.
Blue-green algae
Blue-green algae are not eukaryotic organisms, they are
Prokaryotic
What are the types of Algae?
Blue-green algae, red algae, green algae
4 examples of algae
Volvox, Spirogyra, Ulothrix, Fucus
How are some algae beome toxic to humans?
When those algae form algal blooms.
What are the effects of algal bloom?
Detrimental effects on human health and environment.
How many percent of carbon dioxide does algae fix?
50%
What are algal blooms?
Is the rapid increase in the algal population in a water body such as rivers or lakes. It is also characterized by discoloration of the water and peculiar odor.
