Question

In which of the following population interactions, one organism is benefitted and the other organism is neither benefitted nor harmed?

• A. Lice and humans
• B. Orchid and mango tree
• C. Wasp and fig tree
• D. Orchids and bees

Answer 1

The correct option is B Orchid and mango tree

Commensalism is the interaction where one organism is benefitted and the other is neither benefitted not harmed. Example of commensalism is orchid growing on a mango branch. While the orchid benefits from the mango tree. The mango tree neither gains or is hurt from the relationship.
Lice and humans is a parasitic relationship.
Wasps help pollinate the fig inflorescence while searching for suitable egg-laying spots. In return, the wasp larvae feed on the seeds in the developing fruit. This is a mutualistic relationship.
Orchids provide nectar to bees and bees help orchids pollinate by spreading the pollen. This is also a mutualistic relationship.