3 domain system of classification i) archae primitive prokaryotes salt-loving and heat-loving
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3 Domain System of Classification
i) ARCHAE•Primitive prokaryotes•Salt-loving and heat-loving
3 Domain System of Classification
ii) EUBACTERIA•True -> more advanced•BGA, C – eating heterotrophic bacteria
3 Domain System of Classification
iii) EUKARYOTA•Plants & animals•Protista, fungi, chromists…
5 Kingdom Classification
5 Kingdom Classification
5 Kingdom ClassificationKINGDOM MONERA
All prokaryotes – unicellular, no nuclear membrane, nucleoid, no cell organelles, cell wall-peptidoglycan, ribosome (70s), sex pili
2 types: Archaebacteria & Eubacteria
5 Kingdom ClassificationKINGDOM MONERA
i)Archaebacteria No peptidoglycan – halophiles, thermophiles, acidophiles, methanogenes
ii) Eubacteria True bacteria, autotrophic, saprotrophic, parasitic, symbioticBGA – Nostoc,… (early life), BiofertilizerChemoautotrophs – H2S, NO3
-, S, Fe+2 etc.
5 Kingdom ClassificationKINGDOM PROTISTA
• Simplest eukaryotes – nucleus, nuclear membrane & cell organelles
5 Kingdom ClassificationKINGDOM PROTISTA
CHRYOSOPHYTES•Diatoms & Desmids (golden algae)•Photosyn. , planktonic ; marine / fresh water•C.W-> silica (fossils – Diatomite) used in oil filtering, metal polish
5 Kingdom ClassificationKINGDOM PROTISTA
DINOFLAGELLATES•Various colored photosyn., marine•C.W -> cellulosic•Eg. Gonyaulax -> Red tide on sea•2 flagellae -> transverse & longitudinal•Noctiluca – phosphorescent (glowing @ night)
5 Kingdom ClassificationKINGDOM PROTISTA
EUGLENOIDS•Photoautotrophic, motile, freshwater & brackish water•No cellulosic C.W – but has protein rich pellicle•When no light, they switch to heterotrophic nutrition (ingest other protozoans)
5 Kingdom ClassificationKINGDOM PROTISTA
MYXOMYCETES (slime moulds)•Cool shady places, rich in organic matter•Animal + fungi characteristics•Vegetative phase has: multinucleate protoplasm mass (plasmodium) – no CW Since no CW – slime moulds – engulf food Fruit bodies produce during unfavorable period -> sporangia & spores (with CW)
5 Kingdom ClassificationKINGDOM PROTISTA
PROTOZOANSHeterotrophic / parasitic•Amoeboid - entamoeba (pseudopodia)•Flagellated - Trypasnosoma•Ciliated - Paramecium•Sporozoans (spore like, infectious stage) - Plasmodium