Animal Classification Flashcards
Annelids: (insert)stome, diploblastic or triploblastic, what type of coelom?
Protostome, triploblast, true coelom
Rotifer: (insert)stome, diploblastic or triploblastic, what type of coelom?
Protostome, triploblastic, pseudocoelomate
Mollusk : (insert)stome, diploblastic or triploblastic, what type of coelom?
Protostome, triploblastic, reduced but true coelom
Nemertean : (insert)stome, diploblastic or triploblastic, what type of coelom?
Protostome, triploblastic, true coelom but functionally acoelomate
How do Protostomes develop their tissue layers?
Schizocoely
How do deuterostomes develop their tissue layers?
Enterocoely
Sponges: (insert)stome, diploblastic or triploblastic, what type of coelom?
Trick question, they have no true tissue and don’t differentiate tissue so they aren’t any kind of “blastic”, coelomate, or “stome”
Cnidarians/Ctenophores: (insert)stome, diploblastic or triploblastic, what type of coelom?
Non-“stome”, diploblastic, no coelom but not acoelomate because it isn’t a lineage that had a coelom but got rid of it
Do cnidarians, ctenophores, and sponges, have a “stome” name?
No, only organisms that are bilateral and triploblastic reach the point of blastula development where they get mesoderm and thus a proto/deuterostome label
Where does the differentiation of tissues begin?
Gastrulation, inside of the invagination becomes endoderm, outside becomes ectoderm, mesoderm can develop from that point for triploblasts but diploblastic stop there
- What type of cleavage to protostomes have?
- What do their blastopores become?
- How do they develop mesoderm
- Spiral
- Mouth
- Schizocoely
- What cleavage to deuterostomes have?
- What do their blastomère become?
- How do they develop mesoderm?
- Radial
- Anus
- Enterocoely
