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22 Cards in this Set
- Front
- Back
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Define classification |
Process by which scientists group living organisms. |
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What is the phylogenetic method and why do we use it? |
○it reflects evolutionary history of an organism ○groups closely related together ○same group have common ancestor ○so show physical characteristic simularities |
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Is classification hierarchical |
Yes |
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What is a hierarchy |
A system in which smaller groups are compounds of larger groups |
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What is a taxon |
Grouping system in hierarchy |
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What are the 3 domains |
●Eubacteria ●archea ●eukaryota |
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What are the 5 kingdoms |
●prokaryota ●protoctista ●fungi ●plantae ●animalia |
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What is a domain |
°largest taxon °considers DNA Base sequences |
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What is prokaryota |
Contains all bacteria and cyanobacteria |
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What is protoctista |
□some are singular cells and are component of plankton □some have simular cells |
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What is fungi |
□yeast only has one cell □moulds weave to form body of fungus, a mycelium |
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What does prokaryota cell have |
●no nucleus ●no vacoule ●peptidoglycan cell wall
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What do protoctista have? |
●have nucleus ●some have a vacoule ●have sometimes a cellulose cell wall |
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Do plantae have a cell wall |
Yes made of cellulose |
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What do fungal cells have |
●chitin cell wall ●perm vacoule |
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What is a homologous stricture |
Similar structure but diff functions |
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What is an analogous structure |
Same function but convergent evolution so no common ancestor |
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Name 4 ways of telling relatedness |
●DNA sequencing ●DNA hybridisation ●amino acid sequencing ●immunology |
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What system do taxinomists use |
Binomial |
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Advantages |
●unambiguous naming ●Latin so used everywhere ●two species closely related |
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Define biodiversity |
Number if species (richnes) and number in each species |
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Name 3 adaptions |
●anatomical traits ●physiological traits ●behavior traits |
