Trokary

Trokary is a term used in biology to describe a type of symbiotic relationship between two different species of organisms. In this relationship, one organism, known as the trokaryote, lives within the cells of the other organism, known as the host. The trokaryote is typically a unicellular organism, such as a bacterium or a protozoan, while the host is usually a multicellular organism, such as a plant or an animal.

The trokaryote benefits from the protection and resources provided by the host, while the host may benefit from the metabolic products produced by the trokaryote. This type of symbiotic relationship is often referred to as endosymbiosis, as the trokaryote lives within the host's cells.

Trokary is a relatively rare type of symbiotic relationship, and it is not well understood. However, it is thought to play an important role in the evolution of multicellular organisms, as it may have contributed to the development of eukaryotic cells, which are the building blocks of all multicellular organisms.

Examples of trokary include the relationship between certain bacteria and plants, such as the nitrogen-fixing bacteria Rhizobium and the legumes they infect, and the relationship between certain protozoans and animals, such as the malaria parasite Plasmodium and the mosquitoes that transmit it.