Question

A relationship in which two organisms get benefit from their association is called as

• A. Symbiosis
• B. Mutualism
• C. Commensalism
• D. Parasitism
• E. Competition

Answer 1

Answer: (B)

Mutualism

Mutualism is a mutually beneficial relationship between individuals of two different species. None of the two is capable of living separately. Mutualism is generally considered to be obligatory e.g., nitrogen fixing Rhizobium bacteria living in root nodules of leguminous plants, mycorrhizae (Fungus) living in association with roots of higher plants like Gymnosperms and Lichens, which are a symbiotic association between an algal component (phycobiont) and a fungal component (mycobiont).

Thus, the correct answer is option 'Mutualism'.