Multiple choice

Which of the following is NOT a symbiotic relationship?

  1. competition

  2. mutualism

  3. commensalism

  4. parasitism
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A Correct answer
Explanation

Symbiosis refers to a close, long-term physical interaction between two different biological organisms. Mutualism, commensalism, and parasitism are the three primary types of symbiosis, whereas competition is an ecological interaction but not classified as symbiosis because it does not necessarily involve a close, persistent living arrangement.

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