Which of the following statements best describes secondary endosymbiosis?

Question

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.

Answer 1

B. A host cell ingests another cell already containing a primary symbiont.