Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 45 - Self-Quiz - Page 816: 2


d. interspecific competition

Work Step by Step

Symbiosis is an interaction between two organisms that live in close proximity to one another; one organism derives some benefit from this relationship. Symbiotic relationships can be mutually beneficial, can benefit only one of the organisms, or could benefit one organism while harming the other. Mutualism occurs when both organisms are benefited. In parasitism, one organism benefits while the other is harmed. In commensalism, one organism receives benefits from the relationship whereas the other is not affected. In interspecific competition, neither organism benefits from the other; rather, they both compete for limited resources within their environment, so this is not a symbiotic relationship.
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