Classification
- Created by: catherine312
- Created on: 21-04-22 16:33
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- The Five Kingdoms
- Prokaryotae
- Cell wall made of peptidoglycan
- Some are heterotrophs, some are autotrophs
- No nucleus or membrane bound organelles
- Prokaryotic cell structure
- Very small (0.5-10um)
- Can have a capsule/slime layer
- Some walls have short protein rods called pili
- they stick from the walls and stick cells together
- Cell division is by fission
- Protoctista
- Contains about 30 different phyla whose members are all simple bodied eukaryotes
- Can be autotrophs or heterotrophs
- About 100,000 known Protoctista species
- No cell wall (some exceptions)
- Kingdom best described by exclusion. If an organism is not part of the other four kingdoms, it is a protoctist
- Eukaryotic unicellular or multicellular with limited differentiation
- Fungi
- Lysotrophic (saprophytic)
- Most fungi have bodies made of thread like filaments called hyphae
- Cell wall made of chitin
- They feed by extracellular digestion
- Hydrolytic enzymes are secreted into the soil by exocytosis
- After enzymes have digested organic material in the soil they absorb the products of digestion
- Hydrolytic enzymes are secreted into the soil by exocytosis
- Eukaryotic multicellular or unicellular
- About 100,000 fungi species (moulds, mushrooms, toadstools etc.)
- Plantae
- Eukaryotic organisms containing large vacuoles
- Contain chlorophyll, found in chloroplasts
- Autotrophic nutrition
- They store carbohydrates as starch and lipids as oils
- Cellulose cell wall
- About 350,000 plant species (mosses, ferns, flowering plants etc.)
- Eukaryotic multicellular
- Animalia
- Heterotrophs
- Animals store carbohydrates as glycogen and lipids as fats
- No cell wall
- Most are capable of locomotion
- Eukaryotic multicellular
- Contain over 1 million species (flatworms, insects, chordates etc.)
- Prokaryotae
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