species and diversity Flashcards
(11 cards)
what is taxonomy
the science of classifying organisms based on shared characteristics
what are the taxonomic groups in order
domain, kingdom, phylum, class, order, family, genus, species
what does hierarchical mean
smaller groups within larger groups with no overlap between groups
what is the binomial naming system
latin naming system
genus - species
what does phylogenetic mean
based on evolutionary histories
what are phylogenetic trees
diagrams that show the evolutionary relationships between species based on a common ancestor
the closer together the branches, the more recent a common ancestor, the more closely related
what is species richness
number of species in a community
what is species diversity
combines species richness and abundance in an area
what is genetic diversity
the number of alleles of genes in a population
how does agriculture reduce biodiversity
herbicides and pesticides kill pests and weeds, removing food sources
removal of hedgerows destroys habitats
monocultures destroy habitats, reducing biodiversity and reduce food sources
how does conservation protect biodiversity
endangered species protected, habitats protected from development, farmers encouraged to use sustainable methods
