Which Relationship Is MOST Likely to Be Observed Between Species

Multiple Choice

Which relationship is MOST likely to be observed between species of different classes?

A) A deltaproteobacterium oxidizes hydrogen sulfide into sulfate, which is then reduced by an epsilonproteobacterium.
B) An epsilonbacterium oxidizes the hydrogen sulfide produced by a sulfur-reducing deltaproteobacterium.
C) A sulfate-reducing epsilonbacterium produces sulfite, which a deltaproteobacterium reduces to hydrogen sulfide.
D) Syntrophic metabolism of sulfur by a deltaproteobacterium and an epsilonproteobacterium occurs.