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Use a simple classification key
to identify an unknown
organism.
Use a simple classification key to
identify an unknown organism.
Key concepts/skills:
Level 1: Define key vocabulary, explain binomial
nomenclature.
Level 2: Given a key, classify an unknown organism.
Level 3: Describe levels of classification. Specifically
differences between kingdoms( animal,
plant, fungi, bacteria, protista) , characteristics
of the common phylum (chordates)
vertebrates and invertebrates, class (mammals),
Use a simple classification key to
identify an unknown organism.
Key vocabulary:
Classification
classification key
species
vertebrates
Taxonomy
dichotomous key
genus
invertebrates
Binomial nomenclature
branching diagram
mammals
chordates
Use a simple classification key to
identify an unknown organism.
I. Why classify
A. Reasons
1. Communication
2. number of organisms
3. Aristotle’s system was confusing
Use a simple classification key to
identify an unknown organism.
• Taxonomy – science of naming and grouping
•
organisms
II. Binomial Nomenclature is naming organisms
using two names
A. Carolus Linneaus founded it in the 1700’s
1. Seven levels
•
•
•
•
•
Kingdom
Phylum
Class
Order
Family
• Genus
• Species
Scientific name
Use a simple classification key to
identify an unknown organism.
III. Dichotomous key
A. Dichotomous Key – a series of choices
which allows you to identify an organism
based on its physical features.
Use a simple classification key to
identify an unknown organism.
Examples
Use a simple classification key to
identify an unknown organism.
B. Classification Key
Use a simple classification key to
identify an unknown organism.
C.Branching Diagram
Use a simple classification key to
identify an unknown organism.
IV. Specific Characteristics
A. Mammals
1. bear live young, mammary glands, milk
B. Vertabrates
1.have a bony layer around the spinal
chord
C. Invertabrates (no vertabrae)
D. Chordates have centrally located spinal
chord
Use a simple classification key to
identify an unknown organism.