Use the following choices to answer questions 8–10:
a. Apicomplexa
b. ciliates
c. dinoflagellates
d. Microsporidia
These are nonmotile parasites with special organelles for penetrating host tissue.
Carrageenan is found in the cell walls of which group of algae?
a. red algae
b. green algae
c. dinoflagellates
d. yellow-green algae