10. In mutualism, both organisms are benefited from each other. 11. In parasitism, one organism benefits while the other is harmed. 12. The orchids attached on the trunk of the tree is an example of mutualism. 13. Competition occurs among organisms for food and space. _14. The symbiosis between the sea anemone and clown fish is an example of commensalism. 15. In an example of parasitism, the dog is the host and the fleas are the parasite.
