Evolutionary Review Flashcards
1
Q
Tissue level of organization vs. multicellular
A
- tissue has BASAL MEMBRANE - multicellular has NO basal membrane - basal membrane is the attachment of layers of tissues in the body
2
Q
What does acoelomate mean?
A
- NO coelom
- found in flatworms (phylum Platyhelminthes)
3
Q
What does pseudocoelomate mean?
A
- found in round worms eg. phylum Nematoda
4
Q
What does eucoelomate mean?
A
- true coelom
- found in earthworms
5
Q
What is a protosome?
A
- found in mollucs, arthropods and annelids
- coelom forms by splitting of the mesoderm
- blastophore goes to mouth
- MOUTH FIRST
6
Q
What is a deuterostome?
A
- found in echinodermata
and chordates - coelom forms by out pocketing of gut
- blastophore goes to anus
- ANUS FIRST
