1. Marine Science
20 February 2019

2. Announcements Deficiency notices are due by this afternoon
Assignments handed in by computer are graded first
Yes, I am still grading/inserting paper assignments so they will be in the system by the end of the day
If you need a retake, a discussion reopened, etc., please say something so I can give it to you now and try to get it in the system before I turn in deficiencies

3. Vocabulary Taxonomy Porifera Ostia/osculum Porocyte cell
Choanocyte cell
Amoebocyte cell

4. Taxonomy
This is the classification of all living things (agreed upon by the scientific community)
There are seven different levels in taxonomy, each more specific than the one before:
Kingdom  Animal, Plant, Protista, Fungi and Monera
Phylum  Cnidaria, Cordates
Class  Mammals, reptiles, fish
Order
Family
Genus
Species  most-specific of the classifications

5. Taxonomy Example

6. Sponges
While these creatures are incapable of movement and lack a central nervous system, they have two main similarities to humans:
They have specialized cells to carry out different functions
They are omnivorous
Their classification is Porifera
Literally translates to “pore-bearer”

7. Sponges Ostia: The actual pores/holes on the surface of the sponge
Porocytes: These are the individual cells that make up the pores of the sponge