Symbiosis is a kind of partnership between two organisms in nature.
Mutualism is a symbiotic relationship in which both organisms benefit.
Commensalism is a symbiotic relationship in which one organism benefits and the other neither benefits nor is harmed. Parasitism is a symbiotic relationship in which one organism benefits and the other is harmed. Materials Procedures Adaptations Discussion Questions Extensions Evaluation Suggested Readings Links Vocabulary Academic Standards Credit Printable version of the lesson plan in rich text format. Use our Teaching Tools to create custom worksheets, puzzles and quizzes about this topic. Back to Top 1.