Physical interaction

Endosymbiosis is any advantageous relationship in which one symbiont lives inside the tissues of the other, either inside the phones or extracellularly.[5][15] Examples incorporate differing microbiomes, rhizobia, nitrogen-settling microorganisms that live in root knobs on vegetable roots; actinomycete nitrogen-settling microscopic organisms called Frankia, which live in birch root knobs; single-celled green growth inside reef-building corals; and bacterial endosymbionts that give fundamental supplements to around 10%–15% of insects.[citation needed]

Ectosymbiosis, additionally alluded to as exosymbiosis, is any advantageous relationship in which the symbiont lives on the body surface of the host, including the internal surface of the stomach related tract or the channels of exocrine glands.[5][16] Examples of this incorporate ectoparasites, for example, lice, commensal ectosymbionts, for example, the barnacles which append themselves to the jaw of baleen whales, and mutualist ectosymbionts, for example, cleaner angle.