Reference no: EM132686530

A) What is a coelom? Why was its evolution important to multicellular animals?

B) Describe all the basic characteristics of the Mollusca (e.g., why are they classified as lophotrochozoan protostomes?).

C) Define the following: periostracum, prismatic layer, nacreous layer, reduced coelom, muscular foot, mantle, gills and their functions.

D) Outline the main characteristics of the following groups: Bivalvia, Gastropoda, and Cephalopoda.

E) Do our eyes show a high degree of morphological convergences with those of the cuttlefish Sepia? Explain. How can morphological convergence such as eye convergence happen?

F) Is there any embryological evidence that the Mollusca share a common ancestor with those of polychaete annelids? If so, what is the evidence?

G) Define the following: trochophore larva, dioecious, radula, siphuncle, hectocotylus arms, tentacles.