This is my attempt at a more reasonable study guide and incorporates some questions individuals turned
in today.
Mollusca
Be able to describe the molluscan bauplan
Be able to describe the general structure of the molluscan shell and how it grows, including pearl formatio.
Be able to describe how molluscs are compare to annelids with regard to the following: prevelance of coelom,
digestive system, internal transport system. ability to acquire oxygen, sensory apparatus, especially eye
structure, and excretory and respiratory systems.
Be able to describe how the major molluscan features (shell, mantle, foot, radula) has been modified in snails
and slugs, bivalves and cephalopods. What is torsion? Do all groups possess gills or ctenidia and open
circulatory systems? What types of larvae are present (trocophore, veliger or glochidium)?
Be able to recognize and describe the minor clades found in Molluca, (Aplacophora,Monplacopora,
Polyplacohora, Scaphopoda). Be able to describe a unique feature of each minor class and any unique features
of major classes discussed in lecture.
Be able to describe reproductive strategies in the three major groups of mollusks.
What is torsion? How is the direction of shell coiling inherited?
Be able to describe how bivalves feed. What are labial palps and crystalline styles?
How are chromatophores used by Ccphalopods?
What is the most primitive mollusk. Be able to make cases for gastropods, monoplachophorans and
aplachophorans.
Platyhelminthes relatives? Mollusk parasites
What are mesozoans? Describe their unusual life cycles? Be able to compare them to platyhelminthes. Be able
to describe their unique characteristics.
Lophophores:
What are the lophophorate phyla? Describe the function of a lophophore. What other characteristics do
lophophores share other than the lophophore?
Be able to recognize and compare the three lophophorate phyla or clades. Be able to describe features unique to
each clade.
Describe a Bryozoan colony. How does it compare to that of a Cnidarian?
What are the Kamptozoa or Endoprocts? Are they lopophorates?
Echinoderms:
Using the sea star and sea urchin as examples, be able to explain each of the following echinoderm features:
how the water vascular system is used for locomotion and
how the skin rids itself of "settling" larvae and ectoparasites.
how different chinoderms feed.
Why the body's supporting structure is called an "endoskeleton"?
Why these animals are called "spiny-skinned"?
Again using the sea star and sea urchin as an example, describe major echinoderm systems (water vascular,
respiratory, and digestive).
Be able to describe the general appearance and feeding habits of the different echinoderm classes. Note
especially features unique to sea/ brittle stars and sea urchins, since you viewed these in laboratory.
What is unusual about some brittle star ability to respond to light?
Describe an Aristotle’s lantern.
Which echinoderm class most resembles an ancestral echinoderm?
What are the Concentricycloids?