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NEETZoologyOrganisms and Populations

In a specific population interaction, species A is benefitted (+), while species B is neither benefitted nor harmed (0). Which of the following ecological examples correctly represents this type of interaction?

Options

  1. AWasp pollinating a fig inflorescence
  2. BPhytophagous insects feeding on plant sap
  3. CBarnacles growing on the back of a whale
  4. DVisiting flamingoes and resident fishes in a shallow lake

Correct answer

C. Barnacles growing on the back of a whale

Step-by-step solution

The interaction where one species is benefitted (+) and the other is neither benefitted nor harmed (0) is called commensalism. Barnacles growing on the back of a whale is an example of commensalism, as the barnacles benefit by getting a stable substrate and transportation to food-rich waters, while the whale is unaffected. Wasp and fig represent mutualism (+, +). Phytophagous insects and plants represent predation/parasitism (+, -). Flamingoes and resident fishes represent competition (-, -). Answer: Barnacles grow

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