Lancelets can be classified as all of the following, EXCEPT:

Referring to the image below, which letter indicates the heart?  

In the image show below, the structure labeled ‘A’ is the:  

Which of the following is a urochordate?

In birds, the gizzard is a structure associated with which system?

The only chordates that have lost segmentation as adults are:

In the Perca dissection, you would have observed lamellae under a microscope. Which structure(s) is/are lamellae associated with?

Sea stars, and other echiniderms, are all diploblastic protostomes.

What tissue type is shown in the image below?  

Referring to the image below, indicator 9 is pointing to which of the following?