classification of living things
DESCRIPTION
Classification of Living Things. Entrance question. List at least five thing humans classify. What if no one knew who or what you were? What if you did not have a name?. What are some ways you are classified?. Gender Age Social security number Income State/ are of residence Profession. - PowerPoint PPT PresentationTRANSCRIPT
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Classification of Living Things
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Entrance question
List at least five thing humans classify.
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What if no one knew who or what you were?What if you did not have a name?
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What are some ways you are classified?
Gender Age Social security number Income State/ are of residence Profession
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Let’s watch brain pop.
http://www.brainpop.com/science/diversityoflife/classification/
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Connection to the past
In early ancient Greece, Aristotle started the thinking of classifying organisms based on characteristics.
It was once thought that there were only two kingdoms: Plants and animals.
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Next - Carolus Linnaeus
A Swedish scientist that founded the science of taxonomy.
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Taxonomy
Is the science of naming and classifying organisms.
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Linnaeus His two prime contributions were:
A. Establish conventions for the naming of living organisms using binomial nomenclature (the genus name followed by the species name)
B. Developing an hierarchical system for classification of organisms. Linnaeus' conventions would become universally accepted in the scientific world.
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Why do scientists classify living things?
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To make it easier to organize, find, and share information and eliminate confusion.
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Classification
The division of organisms into groups, or classes, based on their characteristics.
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ClassifyingThe more levels shared, the
more organisms have in common.
As you move down, there are fewer kinds of organisms in each group, but organism look similar and have more in common with one another.
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Scientific name
Scientists around the world use the binomial nomenclature to identify all living organisms.
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Scientific name
The system that assigns the Latin words genus (capitalized) and species (lowercase)
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Con’t
The first part of an organism’s scientific name is Genus and the second part is Species.
Together these two names identify one kinds of organism.
House Cat genus: FelisSpecies: domesticus
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Human Homo sapien
African Elephant Loxdonta africana
Mountain lion Felis concolor
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Kingdom classification
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http://www.brainpop.com/science/diversityoflife/sixkingdoms/
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For a long time, all life on Earth was divided into five kingdoms. Now many scientists say there are six kingdoms. They have divided the first kingdom into two separate groups.
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Levels of Classification( know this in order)
Kingdom Phylum Class Order Family Genus Species
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Make a sentence to help you remember the groups in order.
K-kingP-PhillipC-came O-overF-for G-great S-spaghetti
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Kingdom
Largest group or level of classification
Organized according to certain traits
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Archaebacteria( ancient ) Unicellular Has no nucleus (prokaryotic) Usually makes its own food/autotroph They do not have cell walls The term archae means ancient Some are motile and move from place to
place Lives in extreme environments (hot, cold,
salty and acidic)
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Autotrophable to manufacture nutrients from inorganic materials.
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Types of archeabacteria
Methanogens- Produce methane and die if exposed to oxygen.
Halophiles- live in very salty lakes and ponds.
Thermophiles- live in extreme heat or cold.
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A boiling hot springs in Yellowstone National Park. The orange-red coloration is caused by dense colonies of photosynthetic cyanobacteria
Halophiles/thermophiles
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Eubacteria (true) Unicellular Has no nucleus/prokaryotic Heterotrophic or autotrophic Live in neutral conditions Some are motile Contains all prokaryotic cells except
archaebacteria Known as decomposers They may be helpful or harmful
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Heterotrophgetting nutrients by digesting
plant or animal matter
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E. coli
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Exit question
How do scientists classify organisms?
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Entrance question
What do scientist use to name organisms?
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Protista KingdomMostly unicellular eukaryotic
organismsMakes or obtains own foodClassified by the way they
obtain energySome move from place to place
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Protists
The three groups of protists are: Fungus –like Plant-like Animal-like
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Protozoa
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Cilia
microscopic hairlike process extending from the surface of a cell or unicellular organism.
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Paramecium/uses cilia for movement
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Contractile vacuole
membrane-bound organelle found in certain protists that periodically expands, filling with water, and then contracts, expelling its contents to the cell exterior.
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Flagella
A long, threadlike appendage, especially a whip-like extension of certain cells or unicellular organisms that functions as an organ of locomotion.
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Euglena/uses flagella for movement
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Pseudopods
A temporary foot-like extension of a one-celled organism used for moving about and for surrounding and taking in food.
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Amoeba/uses pseudopods for movement
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Fungi They are eukaryotic heterotrophs that
can act as decomposers. The kingdom includes mushrooms,
mold, and yeasts. All fungi except yeast are multicellular.
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Fungus Kingdom Has one or many cells Has a nucleus/eukaryotic Absorbs food/heterotroph Cannot move from place to place
(sessile) Do not have chloroplasts or cell walls Reproduce by spores
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Spore: asexual reproductive structure: a small, usually one-celled
reproductive structure produced by seedless plants, algae, fungi, and some protozoans that is capable of developing into a new organism.
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Spores
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Examples of fungi are mushrooms, molds and yeast.
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It is used in Hindu rituals this mushroom could cause hallucinations.
Liberty cap grown in the UK
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Slime mold
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Mold
Molds
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Yeast
small single-celled fungus: a small single-celled fungus that ferments sugars and other carbohydrates and reproduces by budding. Genus Saccharomyces.
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Plant Kingdom
Has many cells/multicellular Has a nucleus/eukaryotic Makes its own food using chloroplasts
/autotrophic/photosynthesis Has a cell wall made of cellulose Cannot move from place to
place/sessile
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Cellulose
A stringy, fibrous substance that forms the main material in the cell walls of plants.
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Photosynthesiscarbohydrate production using
light and chlorophyll: a process by which green plants and other organisms turn carbon dioxide and water into carbohydrates and oxygen, using light energy trapped by chlorophyll.
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Producers
organism that makes its food: an organism that manufactures its own food from simple inorganic substances, e.g. a green plant
They are plants.
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Animal Kingdom Has many cells/multicellular Has a nucleus/eukaryotic Does not make own food/heterotrophic Moves from place to place/highly mobile Has an advanced nervous system to
respond to the environment Reproduce sexually or asexually Interdependent on other
organisms/consumers
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Consumers
organism that feeds on others: include herbivores and carnivores , and also organisms such as worms, fungi, and bacteria, which feed on nonliving organic material.
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Summary
Classifying organisms helps in three ways.1. Allows scientists to keep track of organisms2. Helps people communicate by using one naming system3. helps to organize information for further study.
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Exit question
Name the 6 kingdoms.