Download Classification - Baptist Hill Middle/High School

Bell Ringer
• Choose 5 vocabulary terms from your list and
use them in complete sentences. Write these
on a sheet of paper and save to turn in on
Friday.
Classification
Recap from Yesterday
• What are favorable traits? Unfavorable traits?
• What is natural selection?
• What are adaptations?
Evolution in the Marine Environment
• What is a species?
• How do new species arise?
• Rate of evolutionary change
Evolution in the Marine Environment
• All major animal phyla are found in the sea
• At least 80% of all phyla include marine
species
• More ways to “make a living” in the ocean
Evolution in the Marine Environment
• Since physical conditions are relatively
uniform, large animals tend to look the same.
– Similar conditions tend to result in similar looking
organisms
– Traits are independently selected
– Convergent evolution
“The environment isn’t right for the organisms;
rather, the organisms are right for the
environment.”
Classification of Oceanic Life
• Taxonomy
• Artificial System of Classification
– Aristotle proposed grouping organisms based on
external similarities
Classification of Oceanic Life
• Natural System of Classification
• It’s what’s in use today. Why?
– Common underlying natural origin
Classification of Oceanic Life
• Linnaeus – 3 kingdoms: animal, vegetable, &
mineral
• Dropped mineral & expanded the others into
6
• Linnaeus’ system was based on hierarchy
Classification of Oceanic Life
• Linnaeus perfect the naming technique using
scientific name.
Let’s Review!