Prokaryotes are included in which group?

Classifying life forms in various group has been a problem for several years. The oldest classification included just two groups, plants and animals. read more

Classifying life forms in various group has been a problem for several years. The oldest classification included just two groups, plants and animals. In the 19th century, people started realizing that these were insufficient to express the diverse life forms, and various schemes were proposed with three, four, or more kingdoms. read more

At least some prokaryotes also contain intracellular structures that can be seen as primitive organelles. Membranous organelles (or intracellular membranes) are known in some groups of prokaryotes, such as vacuoles or membrane systems devoted to special metabolic properties, such as photosynthesis or chemolithotrophy. read more

Eukaryotic mitochondria are thought be derived from bacteria in this group. Representative species include Rhizobium, a nitrogen-fixing endosymbiont associated with the roots of legumes, and Rickettsia, obligate intracellular parasite that causes typhus and Rocky Mountain Spotted Fever (but not rickets, which is caused by Vitamin C deficiency). read more