[Campbell Biology P.643] Based on the provided text and Figure 28.2, which of the following ... | Practice Question
Based on the provided text and Figure 28.2, which of the following statements about protist cellular features is correct?
A: Unlike prokaryotic cells, protist cells lack a cytoskeleton, which limits their ability to change shape.
B: The ocelloid found in Erythropsidinium is a simple eye-spot that only detects light intensity.
C: Contractile vacuoles are unique to protists and are primarily involved in photosynthesis.
D: Protist cells possess a nucleus and other membrane-enclosed organelles, and some have highly complex subcellular structures like the ocelloid.
Explanation
The text explicitly states that 'the cells of protists and other eukaryotes have a nucleus and other membrane-enclosed organelles' and describes the ocelloid as 'the most complex subcellular structure known' in a group of protists.