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Coevolution is the process by which the evolution of two distantly related organisms strongly influences one another. Charles Darwin was greatly interested in plant evolution and the relationship of plants and their animal pollinators. Darwin suggested that coevolution between plants and pollinators was a very strong mechanism of evolution.

Recent studies have shown that plants may have evolved adaptations that are matched to morphologies, physiology, and behaviors of their animal pollinators. For example, scents in flowers are sexual signals that attract the pollinator and not the plants' sexual partner. The pollinator supplies the mechanism by which the male gamete is transferred to the female gamete — not supplied by the plants itself.

Which of the following statements is correct about coevolution? Select ALL that apply.


Coevolution in plants and pollinators can never lead to speciation because the organisms are too distantly related and there is no geographic isolation.


Mechanisms of coevolution can result in speciation.


It is predicted by ideas of coevolution that as plants diversify into new habitats based on the environmental conditions, their animal pollinators will also diversify.


Pollination is not coevolution but rather it supports the hypothesis of convergent evolution because plant morphologies and their pollinator counterparts are homoplasious.

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