Identify the cell layer layer at the tip of the arrows.  (Hint: This is a cross-section of a planarian at 400x.)  

Identify the structure (layer) at the tip of the arrow.  

Identify the PHYLUM of the organism shown here.  (Hint: this animal is microscopic and has 2 ciliated trochal disks.)

Identify the structure immediately AFFERENT to the structure at the tip of the arrow.    

Identify the structure at the tip of the pointer.    

Identify the structure(s) at the tip of the pointer.  

Identify the structure at the tip of the arrow.    

Identify the PHYLUM represented here.  (Hint: This is a cross-section of a planarian at 400x.)  

Which statement best describes how a gold crown will appear on an image? 

.Identify the structure (embryonic stage) at the tip of the pointer.