Certain Protozoa Engulf Cyanobacteria (Photosynthetic Bacteria)and Maintain a Given Number

question 28

Multiple Choice

Certain protozoa engulf cyanobacteria (photosynthetic bacteria) and maintain a given number of the cyanobacteria even when they divide.The protozoa divide only after the cyanobacteria have doubled their number.The cyanobacteria excrete glucose that the protozoa use for energy.This is a good example of

• A) parasitism by protozoa.
• B) how protozoa consume particulate food.
• C) establishment of an endosymbiotic relationship.
• D) symbiosis between two microorganisms.
• E) convergent evolution.

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