👉 Allacma is a term used in the field of microbiology, referring to a group of organisms that possess the ability to assimilate nutrients from the environment and utilize them for growth and reproduction. It includes bacteria, archaea, protists, and fungi, which are all classified as part of this broader category. Allacmas have specialized structures called cell walls or cell membranes that allow them to perform various functions such as photosynthesis, chemosynthesis, and excretion.