1. How and why are organisms classified?
Organizing Organisms
How and why are organisms classified?

2. How and why are organisms classified?
Use your qualitative and quantitative observations to sort the cards into two groups in a way that makes sense to you.
You must be able to explain how the invertebrates in one group are different from the invertebrates in the other group.

3. How and why are organisms classified?
Use your quantitative observation to sort the cards in at least 3 groups but you may have as many groups as you need. Avoid groups with only one card.
You must be able to explain how the invertebrates in any one group are similar and how each group differs from the other groups.

4. How and why are organisms classified?
Lots of different ways in which all living things can be classified.
To reflect the evolutionary relationships of species
Many scientists don’t agree on the best groupings.
LUMPERS
SPLITTERS

5. KINGDOMS
Eubacteria – bacteria, simple single prokaryotic cell & Archaebacterial – bacteria-like organisms anaerobic environments 3,000,000 – 100,000,000
Protista – large single eukaryotic cell 600,000
Fungi – multicellular filamentous form (mold, fungus, mushrooms, yeast), absorb food 1,500,000
Plantae – photosynthesize food, do not have their own means of locomotion 320,000
Animalia – multicellular with specialized eukaryotic cells, have own means of locomotion, ingest food 9,812,298

6. Mystery Organism
A scientist just discovered this new species and has asked for your help to classify and name it. Which group best fits the mystery species?

7. Mystery Organism Trilobite
Phylum Arthropoda, jointed leg invertebrates (insects)
million years ago
Extinct 200 million years ago
Shallow seas & scavenged off the bottom, filter feeders, sifting out particles in the water to get their food.
Some were large and fierce predators, grabbing their prey and shredding them to pieces before ingesting them.

8. Classification SQUIRREL – Tamiasciurus hudsonicus
KINGDOM (Animalia, or animal)
PHYLUM (Chordata, has a backbone)
CLASS (Mammalia, has a backbone and nurses its young)
ORDER (Rodentia, has a backbone, nurses its young, and has long sharp front teeth)
FAMILY (Scuridae, has a backbone, nurses its young, has long sharp front teeth, and a bushy tail)
GENUS (Tamiasciurus, has a backbone, nurses its young, has long sharp front teeth, a bushy tail, climbs trees)
SPECIES (hudsonicus, has a backbone, nurses its young, has long sharp front teeth, a bushy tail, climbs trees, has brown fur on its back and white fur on its underparts)

9. Classification HUMAN – Homo sapiens
KINGDOM (Animalia, or animal)
PHYLUM (Chordata, has a backbone)
CLASS (Mammalia, has a backbone and nurses its young)
ORDER (Primates)
FAMILY (Hominidae)
GENUS (Homo)
SPECIES (sapiens)