Q.Give one example for: Mutualism.

Mutualism is an interaction that benefits both participating species, and lichens illustrate this especially clearly: the fungal partner provides structure, protection and access to water/minerals, while the algal or cyanobacterial partner supplies the products of photosynthesis, so that neither partner could persist in that same intimate form without the other. A second well-known example from the chapter is the relationship between flowering plants and their pollinators, such as a hummingbird and the tubular flower it visits -- the plant gets pollinated and the bird is rewarded …

• Citing an example where only one partner actually benefits (that would …