BIOL 1202 Chapter : Chapter 28 Protists
Document Summary
Clicker- which of the following best describes most members of the kingdom protista. Protists are more diverse than all other eukaryotes. Absorb organic molecules or ingest larger particles. Much protist diversity has its origin in endosymbiosis. Plastid-bearing lineage evolved into red and green algae. Flagellates: move by 1 or more flagellae. Ciliates: move by coordinated movement of cilia. Protists have a wide variety of life histories. Zygotic life cycle: haploid cells transform into gametes, gametes fuse to form zygotes (e. g. , plasmodium, which causes malaria) Alternation of generations: produce 2 types of multicellular organisms (n and 2n); many algae and all land plants. Concept 28. 2 excavata include protists with modified mitochondria and protists with unique flagella. Main features of euglenozoans is a spiral or crystalline rod of unknown function inside their flagella. Single, large mitochondrion containing an organized mass of dna called kinetoplast. Have one or two flagella that emerge from a pocket at one end of the cell.
