Reference no: EM132686535

A) What are opisthokonts? Unikonts? Do opisthokonts include choanoflagellates as well as animals and fungi? Why?

B) What is the advantage of multicellularity? Think of metabolic considerations as discussed in your text book.

C) Why is the extant genus Proterospongia important to understanding the evolution of multicellularity?

D) Do sponge genomes contain elements that code for parts of the regulatory pathways of more complex animals? Explain.

E) Identify the following: ostia, osculum, mesohyl, amoebocytes, skeletal elements such as spicules, spongin, buds, gemmules, pinacocytes and pinacoderm, choanocytes, archaeocytes.

F) Compare the asconoid, syconoid, leuconoid filtering systems of the Porifera.