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Clamworms and other polychaetes have flap-like appendages called ___. These appendages are uses for locomotion and gas exchange. 

On a dark and stormy night, two earthworms meet outside their burrows. Sperm leaves the male pore of one worm before traveling down the seminal ___to the seminal receptacles of the other worm.

Amphioxus (lancelets) belong to subphylum ___. 

How do beardworms feed themselves?

___ is a synapomorphy of the gnathostomes. (This synapomorphy is an “advance” that gnathostomes made over other animals. The ancestor of all gnathostomes had it, but not primitive chordates. In the PowerPoints, you saw these characters mapped on phylogenies)

Baby kangaroos spend much of their time inside the ____ (=pouch) of their mother. 

Tuataras only occur on the islands of ___.

What are chaetae?

The modern amphibians include frogs, salamanders, and ___. Amphibians in this last group look like earthworms and have dermal scales embedded in their skin. 

Today, there are very few lobe-finned fishes. Most bony fish are ___-finned fishes.