1.SCIENCE Hierarchical Taxonomic System (copy) (copy)

Species

is a group of organisms that share a genetic heritage, are able to interbreed, and create offspring that are also fertile

taxis- ”arrangement“; nomos- “laws”

Taxonomy meaning

Taxonomy

is a field of biology that deals with the process of identifying, naming, and classifying organisms

Systematics

Taxonomy is the subdivision of __ which is the study of biological diversity and its evolution

86%

percent of land species (remain undiscovered)

91%

percent of marine species (remain undiscovered)

2 millions species

number of species of living organisms (named & classified)

8.7 million species

actual number of species (most are insects and microsopic organisms)

Biodiversity

refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolution, ecological, and cultutal processes that sustain life

Species Diversity

refers to the number of species present in an ecosystem and relative abundance of each of those species

Genetic Diversity

refers to the range of different inherited traits within a species

Ecosystem Diversity

refers to the number of different ecosystems on the planet or in a given geographic area

The Classification System

•harmful and nonharmful organisms

•edible or non edible plants

•300 B.C Aristotle (father of biology)- red blood and those without organisms either plants or animals (physical characteristics)

•crude system lasted for 2000 years

Carolus Linnaeus

• Systema Naturae- according to the greater or lesser extent of their similarities

• organisms’ morphology (physical) & behavioral characteristics

• assigned organidmd into groups within groups within groups, on and on

Typological Species Concept

The concept of a species as a group whose members share certain characteristics that distinguish them from other species