Exam policies
- Alternate seats (as possible)
- Regrades only offered for exams written in
pen
- Out of fairness, please ...
- Start only when told
- Do not leave during last ten minutes (after
10:35)
- Stop immediately when told exam is over
- Stay in seat until all exams are collected
"Eucoelomates"
- Polyphyletic
- Two Major Groups, each monoplyletic
- Protostomes
- Deuterostomes
- Both very successful
Coelomate Protostome relationships
- Monophyletic
- Synapomorphies
- True coelom via Schizocoely
Coelomate Protostome relationships
- Monophyletic
- Synapomorphies
- True coelom via Schizocoely
- Trochophore larvae
Coelomate Protostome relationships
- Monophyletic
- Synapomorphies
- True coelom via Schizocoely
- Trochophore larvae
- Three major phyla
- Mollusca
- Annelida
- Arthropoda
Coelomate Protostome relationships
- Monophyletic
- Synapomorphy
- True coelom via Schizocoely
- Three major Phyla
- Annelids and Arthropods united by
segmentation
Increase in size associated with ...
- Decreased surface/volume
- Requires ...
- Elaborated respiratory structures
- Improved digestion
- Improved prey capture, locomotion
- Elaborated excretory systems
Phylum Mollusca
- Highly diverse
- > 100,000 species
Phylum Mollusca
- Highly diverse
- > 100,000 species
- Bauplan = body plan
- Head
- Foot
- Visceral mass
- Open circulation
Phylum Mollusca
- Highly diverse
- Bauplan
- Mollusc synapomorphies
- Reduction of coelom
- Mantle
- Shell (or precursor)
- Muscular foot (or precursor)
- Radula
Phylum Annelida
- Bauplan
- Wormlike (of course)
- Segmented
- Closed circulatory system
Phylum Annelida
- Bauplan
- Wormlike (of course)
- Segmented
- Closed circulatory system
- Annelid synapomorphies
- Setae
- Specialized head
Phylum Arthropoda
- Incredibly diverse
- Millions of species
Phylum Arthropoda
- Incredibly diverse
- Bauplan
- Segmented
- Pronounced tagmatization
- Open circulatory system
Phylum Arthropoda
- Incredibly diverse
- Bauplan
- Segmented
- Pronounced tagmatization
- Open circulatory system
- Arthropod synapomorphies
- Chitinous exoskeleton
- Jointed appendages
- Trochophore lost