Week 3 Flashcards
Paramecium
Ciliates- fine hair like appendages for swimming
Cilia
Phylogeny
Tree of life
Branches=clades
Monophyletic
All descendants of common ancestor
Paraphyletic
Some Descendants of common ancestor
Synapomorphies
Shared derived states
Symplesimorphies
Shared and primitive
Excavata
No mitochondria
Feeding grove- prey and organic debris is ingested
Alveolata
Alveoli-sac like structures, provide support
Stramenopila
Flagella is present- 2 cells, can have hair like projections
Rhizaria
Cells lack cell walls
Psuedopodia project to move it
Archaeplastida
Cells have chloroplasts with double membrane
Amoebozoa
Cells lack cell walls, psuedopodia to move it, form large lobes
Opisthokonta
Reproductive cells have single flagellum
Psuedopodia
Feed or creep around surfaces using lobe like extensions
Phylum rhizopoda
Psuedopodia
Single nucleus
Reproduction
No spores
amoeba
Protist on bottom of ponds in slow moving streams
Endoplasm
Tip of pseudopodium changes to ectoplasm- gel like
Granular, in center of the cell
Amoeboid movement
Primary mode of locomotion
Phagocytosis
Eating cell
Phylum myxogastrida
Heterotrophic
Do not divide
Plasmodium
Plasmodial slime molds with these interconnected cells
Coenocytic
Within plasmodium, numerous nucleus nut now walls between cells
Swarm cells
Spores become flagellated, when two swarm cells fuse-> zygote is produced->new plasmodium
Flagella
Long whip like organelles, wave back and forth
Phylum parabasalida
Symbiotic (mutualistic or paralistic) inside multicellular organisms like plants and animals
Trichonympha
Lives inside intestines of termites, breaks down cellulose for termites