A photoautotrophic unicellular organism with a shell made of silica is most likely a(n)________.
A)apicomplexan
B)foram
C)dinoflagellate
D)diatom

Question

Quizplus · Accepted Answer

Diatoms are unicellular photoautotrophic organisms with a unique cell wall made of silica, giving them a distinct appearance under microscopy. Apicomplexans, such as Plasmodium, are parasitic organisms that do not have a silica shell. Forams and dinoflagellates have shells made of calcium carbonate or cellulose, respectively.

A Photoautotrophic Unicellular Organism with a Shell Made of Silica