1.10.2018 Flashcards Preview

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Flashcards in 1.10.2018 Deck (11):
1

how many species do we know?

1.4 million

2

how many species do we believe exist?

9 million
85% of species are unknown

3

dichotomous key

yes/no system that uses characteristics to identify organisms

4

systematics

a discipline focused on classifying organisms and determining their evolutionary relationships

5

2 sub disciplines of systematics

1. taxonomy
2. phylogenetics

6

taxonomy definition

describing and naming organisms

7

what does taxonomy do?

hierarchical classification
distinguish close relatives
arrange into broader categories

8

hierarchical classification (from most broad to least broad)

domain
kingdom
phylum
class
order
family
Genus
species

9

rules for binomial nomenclature

Genus is capitalized
species is lowercase
both are italicized
when handwritten, underline them

10

binomial nomenclature

naming system that ensures that every species has an unambiguous name and that is globally understood (since latin is a dead language it no longer changes, thus people around the world can understand it)

11

who developed binomial nomenclature?

Linnaeus in 1758