organism Definition

a complex structure of interdependent and subordinate elements whose relations and properties are largely determined by their function in the whole

an individual constituted to carry on the activities of life by means of parts or organs more or less separate in function but mutually dependent : a living being

phytoplasma

mycoplasma

any of a genus (Mycoplasma of the family Mycoplasmataceae) of pleomorphic gram-negative chiefly nonmotile bacteria that lack a cell wall and are mostly parasitic usually in mammals —called also pleuropneumonia-like organism

any of a group of bacteria that are related to mycoplasmas, cause plant diseases (such as aster yellows or elm yellows) by infecting phloem tissue, and are transmitted especially by homopteran insect vectors —called also mycoplasma-like organism