AP BIOLOGY

Detailed explanation-1: -The rumen (on the left side of the animal) is the largest stomach compartment and consists of several sacs. It can hold 25 gallons or more of material depending on the size of the cow. Because of its size, the rumen acts as a storage or holding vat for feed. Aside from storage, the rumen is also a fermentation vat.

Detailed explanation-2: -The rumen absorbs nutrients through papillae of the rumen wall and facilitates fermentation, creating the rumen bacteria and rumen microbes necessary to break down and digest the proteins in feed.

Detailed explanation-3: -The cellulose of the food is digested by certain specific bacteria of the rumen.

Detailed explanation-4: -The rumen contains a large quantity of ingesta and produces a large volume of gas through the process of fermentation.

Detailed explanation-5: -The rumen, also known as a paunch, is the largest stomach compartment in ruminants and the larger part of the reticulorumen, which is the first chamber in the alimentary canal of ruminant animals.