NEET BIOLOGY

Detailed explanation-1: -Commensalism is a relationship between species in which one benefits and the other is unaffected. Humans are host to a variety of commensal bacteria in their bodies that do not harm them but rely on them for survival (e.g. bacteria that consume dead skin).

Detailed explanation-2: -It is a kind of symbiotic relationship; however, one of the partners is neither benefited nor harmed. The partner that draws the benefit is known as a commensal while the other one is known as the host species.

Detailed explanation-3: -Amensalism is a non-symbiotic, asymmetric interaction where one species is harmed or killed by the other, and one is unaffected by the other. There are two types of amensalism, competition and antagonism (or antibiosis). Competition is where a larger or stronger organism deprives a smaller or weaker one of a resource.

Detailed explanation-4: -Parasitism-a symbiotic relationship in which one organism benefits and the other is harmed. Mutualism-a symbiotic relationship in which both organisms benefit. Commensalism-a symbiotic relationship in which one organism benefits and the other is neither helped nor harmed.