Describe how the three main groups of molluscs we discussed in class (gastropods, bivalves, cephalopods) are adapted for their particular lifestyle and how they have evolved from the “hypothetical ancestral mollusc” form. How do they differ from the hypothetical ancestral mollusc? What adaptations do they show to fit their lifestyle or to avoid complications that may have arisen as a result of that evolution?

Forgetting to add sugar to a chocolate chips cookie recipe.   Type of Scheme: Subtype of Scheme:

You are driving and approaching a stop sign, but you forget to do so because you are in a hurry. Type of Scheme: Subtype of Scheme:

Both annelids and nematodes have circular and longitudinal muscles.

I. (20pts) Fill in the Blanks A. (10pts/2pts each) Indicate what type of attention each of the statements belong to.  

List two adaptations for active predation seen in Class Cephalopoda.

Listening to a single conversation at a concert while ignoring other background noise of all of the fans whispering nearby.

A synthetic version of conotoxin of some cone shells can be used as an anesthetic that is much more powerful than morphine.

Flatworms are triploblastic.

Talking on the phone while checking your email.