What is the definition of commensalism?

What is the definition of commensalism?
  1. One species benefits and the other is harmed
  2. Both species benefit from each other
  3. One species benefits and the other is neither harmed nor benefited
  4. Both species are harmed from each other

Solution

Commensalism refers to the interaction between two species in which one species benefits, while the other is neither harmed nor benefited.

Asked in: NCERT

Practice more Organisms and Populations questions on Aicharya