Mutualism is found in

Options

A. hermit crab and sea-anemone
B. butterfly and flower
C. zoochlorellac and Hydra
D. E.coli and man.

Answer

C

Explanation

Mutualism is an obligatory positive interspecific strongly beneficial to both species. The unicellular photosynthetic plants, called of coelenterates . Algae are photosynthetic and produce oxygen and nitrogenous compounds benefical to hosts and in exchange they obtain materials like carbon dioxide and nitrogenous wastes released by metabolism of host animals. The relationship between hermit crab and sea anemone is an example of commensalism.