Answer:
C) commensalism
Explanation:
Commensalism is an interaction in which one organism benefits without causing any harm to the other. The other organism derives no benefit from the relationship.
The scenario above in which the dwarf mistletoe obtains nutrients from the vascular tissues of trees is a perfect example of such a relationship.
Parasitism is similar to this but the other organism is harmed in the process.
When lactose is not present, what happens to E. coli is that the genes that produce the enzymes needed to break down lactose are not expressed. The correct answer is B.
