Most herbivorous animals do not have the ability to digest the cellulose in plants. What mechanism has evolved in the absence of this ability that allows them to survive despite eating only plant matter?

Question

Quizplus · Accepted Answer

Many herbivorous animals have symbiotic microorganisms in their digestive system, such as bacteria or protozoa, that are able to break down cellulose and release nutrients for the animal to absorb. This allows them to extract energy and nutrients from plant matter despite their inability to digest cellulose on their own.

Most Herbivorous Animals Do Not Have the Ability to Digest