The term used to describe a harmless organism resembling a harmful one is view available hint(s) the term used to describe a harmless organism resembling a harmful one is warning coloration batesian mimicry cryptic coloration aposematic coloration müllerian mimicry

The term used to describe a harmless organism resembling a harmful one is batesian mimicry. Cryptic coloration or camouflage makes prey difficult to spot, while aposematic coloration is a type of coloration exhibited by animals with effective chemical defenses. Mullerian mimicry is a type of mimicry in which two or more unedible species resemble each other. 

Cell theory states that living things are composed of one or more cells, that the cell is the basic unit of life, and that cells arise from existing cells