Most Herbivorous Animals Do Not Have the Ability to Digest

Multiple Choice

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?

A) production of saliva containing amylase
B) digestion by symbiotic microorganisms
C) avoidance of plants containing cellulose
D) converting cellulose to other carbohydrates in the animal's own cells