What are the cell walls of these protists made of?  

Based on the evolutionary tree shown here, which two organisms are most closely related?

What is the name of these protists?  

Club moss and spike moss are seedless vascular plants, not mosses.

What are the structures pictured below?

Which of the following describes the structure pictured below?

Which of the following is not an example of symbiosis?

What are the extensions of cytoplasm in this protist called? 

Which of the following describes the structures below?     

______________ is he field of biology which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes evolved.