Answer:
Complex multicellular organisms will suffer more, because vital differentiated cells that the rest of the organism requires will be lost.
Explanation:
As the new producer will take bites of organisms, the complex organisms will most likely be harmed more from such a mode of nutrition. This is because each part of a complex organism will be made up of vital differentiated cells which will be specialized to perform its function. Loss of such part will lead to certain permanent kind of disabilities in the complex organism.