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BIODIVERSITY- is the number of different species on the planet

SPECIES- a group of organisms which share a large number of characteristics and can interbreed in
natural conditions to produce fertile offspring

EXTINCTION- Is the loss of a species

Tropical rainforests and coral reefs- most diverse habitats- greatest concentration of…

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Darwin suggested all the types of Finch came from a common ancestor and that the type of
beak had developed over time and become specialised to feed on a particular food source-
This is an example of ADAPTIVE RADIATION

NATURAL SELECTION- The process that drives evolution

There is VARIATION within…

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TAXONOMY is the scientific study of the diversity of living things

A CLASSIFICATION SYSTEM puts order and plan on the immense diversity of life

Scientists look for physical similarities and differences between species looking at;

Number of appendages/legs

A TAXON is a level in the classification hierarchy…

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Organisms which are not animals, plants or fungi
Algae, water/slime moulds, amoeba, protozoa
4. Fungi
Network of threads called hyphae form a mycelium
Cell wall made of chitin
DO NOT PHOTOSYNTHESIS- they are HETEROTROPIC- all members are either
SAPROPHYTIC (live on dead things) or PARASITIC
Mushroom, yeast, penicillium.

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FISH- Scales, fins, gills
AMPHIBIAN- first land vertebrates; part aquatic, part terrestrial. Soft, moist
skin. Eggs fertilised externally in water where they develop. Young are
aquatic and have gills, adults are land and have lungs
Reptiles- terrestrial, dry skin with scales. Have lungs. Eggs fertilised
internally, covered in…


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