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Vocab so far…
o Ecology
o Ecosystem
o Habitat
o Abiotic Factors
o Biotic Factors
o Environment
Ecology deals with different levels of organization
Small to Big, levels of Organization
-Atom
Molecule
Cell
Organism/Species
Populations
Community
Ecosystem
Biomes
Biosphere
Levels of Organization
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Individual= one living thing, one organism
Species = a group of similar organisms that can breed and produce fertile offspring
Populations = a group of individuals that belong to the same species and live in the same area
Communities = an assemblage of different populations that live together in a defined area
Ecosystem = all the organisms that live in a place together with their physical environment
8 Characteristics of Living Things
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o Made of cells
o Have DNA
o Maintain homeostasis (stable internal enviro.)
o Respond to environment
o Reproduce
o Grow and develop
o Obtain and use materials and energy
o Groups of organisms evolve
Classifying Biotic Factors
o studying the relatedness between species is called = Taxonomy
o Classifying Living Things/Biotic Factors
o EXAMPLE: Domain: Eukarya
 Kingdom: Animalia
 Phylum:Chordata
o Class:Mammalia
 Order:Sirenia
 Family:Trichechidae
o Genus:Trichechus
 Species: manatus
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Binomial Nomenclature
Scientific Name
 Trichesus manatus OR Trichesus manatus
o Common Name
 West Indian Manatee
3 Domains
o Prokaryotes = “before nucleus”
 2 Domains, 2 Kingdoms:
 Bacteria and Archaea (more closely related to Eukaryotes)
 Simplest and oldest life forms
 Cell wall, cell membranes
 No membrane bound organelles
 DNA not in a nucleus
Eukaryotes = “true nucleus
o 1 Domains, 4 Kingdoms:
o Protista, Fungi, Plantae, Animalia
o Membrane bound organelles
o DNA in a nucleus
The 4 Eukaryotic Kingdoms
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Protists
 single celled organisms
 Some Photosynthetic
 Some Heterotrophs
Fungi
 Multicellular
 Heterotrophs
Plantae: Plants
 Multicellular
 Photosynthetic autotrophs with true vascular tissue
Animalia: Animals!
 Multicellular
 Heterotrophs
 Most are capable of movement
 Invertebrates vs. vertebrates
NEW VOCAB:
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Species
Populations
Communities
Biomes
Biosphere
Taxonomy
Eukaryotes
Binomial Nomenclature
Prokaryotes