During the Jurassic Period, Several Different Mammalian Lineages Independently Evolved

question 19

Multiple Choice

During the Jurassic Period, several different mammalian lineages independently evolved an herbivorous lifestyle for obtaining energy. This has resulted in

• A) different digestive patterns in herbivorous animals, some that depend on gut microbiota to digest plant material and some that do not.
• B) different digestive patterns in herbivorous animals that all depend on gut microbiota to digest plant material.
• C) the evolution of foregut fermentation, as seen in ruminants, as the only digestive pattern that depends on fermentative gut microbiota.
• D) horizontal gene transfer of genes for glycoside hydrolases and polysaccharide lyases from bacteria to mammals.

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