In some cases, the species are entirely dependent on each other (obligate mutualism) and in others, they derive benefits from their relationship but could survive without each other (facultative ...

This is obligate mutualism. There are about 750 species ... Acacia trees of Central America, for example, may have evolved hollow thorns for acacia ants to live. The ants, in turn, likely ...

The fig wasp pollination mutualism is a quintessential example of an obligate ecological interaction, wherein minute pollinator wasps and their Ficus hosts engage in an intricate and enduring co ...

Figs and their pollinating wasps are perhaps the classic example of a relationship called ... to the survival of both parties called obligate mutualism (the 11cm-long beak of the sword-billed ...

and their agaonid pollinating fig wasps are a classic example of coevolution. It represents perhaps the most extreme and ancient (about 75 million years) obligate pollination mutualism known.