Which of the following statements best describes secondary endosymbiosis?
A)A host cell manufactures its own symbiont and later acquires another one by phagocytosis.
B)A host cell ingests another cell already containing a primary symbiont.
C)A host cell ingests two or more symbionts simultaneously.
D)A host cell ingests one symbiont and then later ingests another one.
E)A host cell without plastids ingests a prokaryotic cell.

Question

Quizplus · Accepted Answer

Secondary endosymbiosis involves a eukaryotic host cell engulfing another eukaryotic cell that has already undergone primary endosymbiosis (i.e., contains a plastid derived from cyanobacteria). This is different from primary endosymbiosis, which involves a eukaryotic cell engulfing a free-living prokaryotic cell that eventually becomes a plastid.

Which of the Following Statements Best Describes Secondary Endosymbiosis