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Binomial system- organisms are given 2 Latin
names. (genus & species)
Increasing in number if species in
Species- group of organisms that can
interbreed to produce fertile young.
each group
Species. Increasing in similarity…read more

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The 5 kingdoms..
Animals Plants Fungi Prokaryotes Protoctists
features No cell walls Cellulose wall Chitin cell Cells have no Single cell
multicellular Use light to walls nucleus organisms or
produce food by Reproduce Cell wall isn't a colony of
photosynthesis using made from single cells
spores cellulose
Example Jellyfish Algae Moulds Bacteria Amoeba
Worm Conifers Mushroom Blue-green Paramecium
Frog Rose Yeast algae protozoa
Ferns & mosses…read more

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Arthropods- jointed foot.
· Subdivision of invertebrate
· Largest animal group
· Have limbs with joints which allow them to move
· Exoskeleton that sheds when they grow.…read more

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Classification part 2
· Lion + tiger = liger
This is not a species- it cannot
reproduce to produce fertile young.
Problems with classification- not everything Not all species that look the same
fits. evolved from common ancestors but
· Bacteria reproduce asexually and so have adapted to live in the same
cannot be classified into a species. environment so share characteristics.
· Unfertile hybrids can be produces by e.g. whales, dolphins and sharks all look
breeding members of different species. the same but evolved from different
· E.g. horse + donkey = mule ancestors.
· Evolution is a continuing process.
Artificial classification Natural classification
Based on observed characteristics Includes natural relationships
Used for simplicity- say what you see. Internal and external features
Based on evolutionary relationships
and DNA.…read more

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Energy flow
· Producer- Makes its own food in the food chain.
Usually by photosynthesis
· Primary consumer- Eats the producer, usually a
· Secondary consumer- Eats the primary consumer.
Usually a carnivore but can also be an omnivore
· Trophic level-each level or stage that something
occupies in the food chain
· Herbivore-Eats only plants
· Carnivore-Eats only animals
· Omnivore- Eats both plants and animals…read more

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