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!