What is the difference between mutualism, commensalism and parasitism symbiosis

Mutualism, commensalism, and parasitism are all different types of symbiotic relationships between organisms.

Mutualism is a type of symbiosis in which both organisms benefit from the relationship. This can involve the exchange of resources, such as food or protection, or the mutual enhancement of each other's fitness. An example of mutualism is the relationship between bees and flowers, where the bees obtain nectar from the flowers for food, while the flowers are pollinated by the bees.

Commensalism is a type of symbiosis in which one organism benefits from the relationship while the other organism is neither helped nor harmed. In a commensal relationship, one organism relies on the other for resources or support without exerting any harmful effects on it. An example of commensalism is the relationship between remoras and sharks. Remoras attach themselves to sharks and feed on the scraps left by the shark's meals, without harming the shark.

Parasitism is a type of symbiosis in which one organism benefits at the expense of the other organism. The parasite benefits from the relationship by deriving nutrients or shelter from the host organism, while the host is harmed in the process. An example of parasitism is the relationship between ticks and mammals, where ticks feed on the blood of mammals, causing harm and potential disease transmission to the host.

In summary, mutualism benefits both organisms, commensalism benefits one organism without harming the other, and parasitism benefits one organism at the expense of the other.