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Transcript of Dichotomous key
(chemosynthesis) chemosynthetic bacteria sphere shaped live on/near roots of plants
or in soil produce nitrates nitrogen fixing bacteria can survive hostile environments ex: African Soda Lakes oldest known fossil cyanobacteria Eukaryotic not a plant, animal, or fungus kingdom protista decomposer like protist fungus like protist produce asexually contain cell wall no cell wall when spore germinates and cracks it releases myxamoeba spore:A minute, typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion. myxamoeba: A slime mold at a stage when it is an amoebalike free-swimming cell and before it fuses to form a plasmodium. myxomycota nucleaus is haploid haploid: Having a single set of unpaired chromosomes. nucleus is diploid diploid: Containing two complete sets of chromosomes, one from each parent. cell wall contains cellulose and glycan oomycota cellulose rich cell wall acrasiomycota heterotrophs capable of locomoion animal like protist No way of movement
lack flagella and cilia flagella: A slender threadlike structure, esp. a microscopic whiplike appendage that enables many protozoa, bacteria, spermatozoa, etc., to swim cilia: A short, microscopic, hairlike vibrating structure obtain nutrients by absorbing molecules live at expense of other organisms; parasitic sporozoa contain flagella, cilia, pseudopodia(false feet) as away of locomotion use flagella and pseudopodia no cilia use cilia only for movement two nuclei ciliphora have external test(shell) no test(shell) live at sea bottom or float in upper column foraminfera no digestive system cause african sleeping sickness zoomastigophora Rhizopoda photosynthetic autotrophs plant like protist euglenophyta sexual reproduction only have "eyespot" to sense light and dark contain chlorophyll a/b and cartenoids reproduce aexually only reproduce both sexually and asexually contains chlorophyll a only common in marine and freshwater have complex covering called amphiesma dinoflagelletes cell wall composed of cellulose with large quantity of silica contain bright yellow pigment chrysophyta contains chlorophyll c and fucoxanthin all are multicellular phaephyta no flagella contain chlorophyll a Rhodophyta may contain flagella flagella is only on male gamte develop auxospores auxospores:are involved in re-establishing the normal size in diatoms because successive mitotic cell divisions leads to a decrease in cell size. bacillariophyta flagella moves clockwise contain small subunit of rDNA Chlorophtya not plant, animal, or protista fungi unknown reproduction use dueteromycota reproduce with spores spores: typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion. produce basidia basidia: club-shaped spore-bearing structure produced by certain fungi cause severe plant diseases basidiomycota produce diaspores diaspores:A spore, seed, or other structure that functions in plant and fungal dispersal; a propagule. lichen survive all climates and altitudes produce ascospores ascospores:sexually produced fungal spore formed within an ascus. ascus:A sac in which the spores of certian fungi develop. may form mycelia mycelia:the vegetative part of a fungus, consisting of a network of fine white filaments (hyphae) ascomycota not animal, protista, or fungi Kingdom Plantae have no roots
use rhizoids rhizoids: A filamentous outgrowth or root hair on the underside of the thallus in some lower plants mostly hornworts mostly liverworts mostly moss bryophyta hepatophyta anthocerophyta vascular does not produce seeds produce seeds gymnosperms angiosperms gymnosperms:A plant that has seeds unprotected by an ovary or fruit. angiosperms: A plant that has flowers and produces seeds enclosed within a carpel coniferphyta anthophyta air dispersed spores spores: typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion spores on end of stem tips called stobili spores:typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion Pterophyta have true leaves no true leaves lycophyta sphenophyta nonvascular not a fungi, plant, or protisa Kingdom Anamalia no definite symmetry no nervous system porifera radial symmetry Symmetry around a central axis has a simple net like nervous system mostly carnivorious carnivorious:Feeding on other animals. Cnidaria nervous system includes circum-oesophageal ring circum-oesophageal:Well-developed ring of nerve tissue surrounding esophagus no excretory system echinodermata Bilateral symmetry no true body cavity no anus dorsoventrally flattened platyhelminthes have an anus dorsoventrally Flattened
(flattened along the length of it's back) flattened along the length of it's back most carniverous Feeding on other animals nemertea ctenida gills
(gaseous exchange organs)
has pair of kidneys mollusca have a body cavity body cavity is pseudocoel