Upload
bridget-newton
View
219
Download
4
Tags:
Embed Size (px)
Citation preview
Acton Biology Mr. LeBlancSBI 3U
Diversity of Living Things
Growthincrease in sizeenlargement of a single cell or mitotic division towards the forming of a multi-cellular organismleads to a series of changes that allows an organism to reach its final form (development)
Reproductiononly life can produce life (like produces like)organisms must reproduce because they have a limited life spanmethods include asexual and/or sexual reproduction
Irritabilityresponse to stimuli or changes in the environmentallows for survival
Maintenance and Repairenergy is needed to repair damaged and/or worn out parts
Metabolismis the exchange of matter and energy between an organism and its environment and the changes that occur in this matter and energy when they are in the organism
Originally developed by Carl Linnaeus (18th century) His system was based on physical
features and structuresWhy?
Two-part Latin naming system First part is the genus Second part is the species Ex. For Homo sapiens (the name for
humans), Homo is the genus and sapiens is the species
A species is a group of organisms that can breed and produce fertile offspring under normal conditions▪ Example and non-example?
Taxonomy is the modern classification system for organisms
The levels of classification are called taxa A single taxonomic level is called a
taxon
Species
Genus
Family
Order
Class
Phylum
Kingdom K
P
C
O
F
G
S
K
P
C
O
F
G
S
Least number of taxonomic groupsGreatest number of organisms per taxon
Greatest number of taxonomic groups
One organism per taxon
Eubacteria – “True” bacteriaArchaebacteria – “Ancient” bacteriaProtista – Eukaryotic microorganismsFungi – Yeasts, molds and
mushroomsPlantae – PlantsAnimalia - Animals
UnicellularProkaryoticHeterotrophic or autotrophicAsexual reproductionCell wall (peptidoglycan)Ex. algae
Procholorococcus – an autotrophic bacterium
Bundren, 2008 13
UnicellularProkaryoticHeterotrophicCell wall (no
peptidoglycan)
Reproduction – asexualCell Wall – cell walls without
peptidoglycanHabitat – live in extreme habitats
such as hot springs, geysers, volcanic hot pools, brine pools, black smokers
Bundren, 2008 15
Morning Glory Pool in Yellowstone National Park – note the bright colors from the archaebacteria growing in the extremely hot water.
Bundren, 2008 16
Bundren, 2008 17
Archaebacteria can live deep in the ocean near geothermal vents called black smokers
There is no light, so they carry out chemosynthesis instead of photosynthesis
Bundren, 2008 18
Single celled or multicellularProkaryotic or eukaryoticAutotrophic, heterotrophic or bothSexual or asexual reproductionCell wall
Volvox – a colonial protist
Euglena - autotrophic
A slime mold
Amoeba - heterotrophic
Bundren, 2008 20
Most are multicellularHeterotrophicSexual and asexual reproductionCell wall made of chitin
Stilton cheese
Bread mold
Bundren, 2008 22
MulticellularAutotrophicSexual and asexual reproductionCell wall made of cellulose
Bundren, 2008 24
MulticellularHeterotrophicSexual reproduction (most)No cell wall
Coral snake
Sponge
Flatworm
Octopus
Jellyfish
Bear
Bundren, 2008 26