Zoology 230 UWRF Exam 1: Protozoans Questions Perfectly Answered!!

Animal - eukaryotic organism with no cell walls, multicellular, motile, and ingestion feeders development - progression of life stages primitive - taken along the way of evolutionary development holozonic - Whole food engulfing saprozoic - absorbing food monophyletic - group having a common ancestor, part of that group Protozoan similarity to animals - They lack cell wall, one motile stage in life, holozoic homeostasis - maintain internal environment osmoregulate - regulation of salt in the body (osmosis) organelles - Protozoan complexity due to? somatic and reproduction cells - what example of division of labor among cell types of seen in certain colonial forms? binary fission - a form of mitotic division schizogany - repeated nuclear divisions followed by simultaneous cytokinesismitosis - nucleus division, NOT cell division syngamy - fertilization of one haploid gamete by another cilia and flagella - what 2 types of protozoan locomotory organelles are morphologically the same? pseudopodia - "false foot"-- major locomotory structure found in protozoans lobopodia - type of pseudopodia that is large and blunt, containing both endoplasm and ectoplasm excretion - simple diffusion from high to low concentration in protozoans ammonia - major end product of protein metabolism in protozoans contractile vacuoles - how do freshwater protozoans lose water that naturally enters their cell membrane via osmosis