Certain bacteria live in plant roots and receive sugars from the plants. The bacteria provide a source of useful nitrogen for the plants. This best describes mutualism type of relationship.
Mutualism is the type of feeding relationship between two different organisms where both benefits from each other without causing harm.
Examples of mutualistic feeding relationship include:
The feeding relationship that exists between the bacteria and the plant roots is mutualism because the bacteria receives sugar from the plants roots while the plants obtain a source of useful nitrogen from the bacteria.
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