bio 2 exam 1 protists

protists

unicellular eukaryotes- most abundant in moist habitats

endosymbiosis

unicell engulfs another cell

mitochondria

evolved by endosymbiosis of aerobic prokaryote

plastids

evolved by endosymbiosis photosynthetic cyanobacterium

3 groups ecological role

• algae ( plant like) generally photoautotrophic

• protozoa ( animal like) - heterotrophic

• fungus-like— resemble fungi in body form and absorpitive nutrition

ecavata

feeding groove “ectavated” into cells - eugelonzoans ( eugelna is photosynthetic )

SAR

stramenopiles, alveolates, rhizarans — most have hair flagellum

dinoflagellate

blooms cause red tides where water looks red bc carotenoirds

apicomplexans

most cycles are sexual and asexual stages- require 2+ hosts-

plasmodium falciparum

parasie causing malaria

phylum radiolaria

responsible in part for the crude oil

phycoerythrin

acessory pigment masks green chlorophyll giving red algae its color

charophytes

include algae most closely related to plants

pseudopodia

temprory extencion cells cytoplasm