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Biological Classification - Part 2 - Coggle Diagram
Biological Classification - Part 2
5. No place in Classification
Viruses - venom or poisonous fluid
Dmitri Ivanowsky (1892) - certain microbes - mosaic disease of tobacco - smaller than bacteria
M.W. Beijerinek
(1898) - extract of the infected plants of tobacco could cause infection in healthy plants
Named Virus, Contagium vivum fluidum (infectious living fluid)
W.M. Stanley (1935) - crystals-largely of proteins. -inert outside host
RNA or DNA
Plant viruses - ssRNA, Animal viruses - ss or ds RNA or ds DNA
bacteriophages - usually dsDNA viruses
protein coat - capsid - capsomeres - helical/polyhedral geometric forms
Viral diseases - mumps, small pox, herpes, influenza, AIDS
Symptoms - mosaic formation, leaf rolling and curling, yellowing and vein clearing, dwarfing and stunted growth
Viroids
1971, T.O. Diener - Smaller than virus
potato spindle tuber disease
lacked protein coat - free RNA (Low MW)
Prions
similar in size to viruses
neurological diseases -
BSE - Mad cow disease in cattle, CJD in humans
abnormally folded protein
Lichens -
good pollution indicators
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phycobiont
autotrophic
mycobiont
heterotrophic
Fungi
Phycomycetes
Ascomycetes - Sac fungi
Basidiomycetes - Bracket fingi, Mushrooms, Puffballs
Deuteromycetes - Imperfect Fungi
Saprophytes, parasites, many decomposers of litter(mineral recucling)
Septate & branched
only asexual - conidia
Sexual placed in other groups once identified
1 more item...
Soil, logs, tree stumps, parasites - Rust,smut
Septate & branched
No asexual
Sex organs absent but Basidium - Basidiospores - carps
Agaricus (mushroom), Ustilago (smut) and Puccinia (rust fungus)
Saprophytes, parasites, coprophilus
Septate & branched
Conidia
Ascospores - ascocarps
Penicillium, yeast, Aspergillus, Claviceps, Neurospora
aquatic,decaying wood, obligate parasites on plants
aseptate & coenocytic
zoospores(M), aplanospores(NM)
Zygospore types
Mucor, Rhizopus(bread fungi), Albugo (Mustard)
Environment
Mycelium
Asexual
Sexual
Examples
Plantae
All photosynthetic
Partially heterotrophic
insectivorous plants - Bladderwort & Venus fly trap
Parasite - Cuscuta
Lifecycle
alternation of generation
diploid sporophytic
& haploid gametophytic
Animalia
heterotrophic eukaryotes
multicellular
Food reserves - glycogen/fat
Holozoic