OBJECTIVE LIFE SCIENCE
ANIMAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the rumen churns up the grass material
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bacteria fungi and protists produce cellulase to break down the cell walls of fibrous foods
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enzymes produced by the cow stomach wall breaks it down
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there is no digestion in the rumen
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Detailed explanation-1: -Ruminant animals can digest fibre via microbial fermentation to obtain useful energy needed for various biological functions. In dairy cows, dietary fibre improves milk fat by increasing the amount of rumen acetate which acts as a precursor of milk fat synthesis.
Detailed explanation-2: -Breakdown of complex plant fibers is initiated by degradative enzymes of rumen microbes, including enzymes capable of degrading cellulose, xylan (hemicellulose), and pectin.
Detailed explanation-3: -The bacteria in the rumen break down larger carbohydrate molecules found in plant cells into simple sugars in a process called fermentation. The microbes use some of these sugars to grow and multiply, and the rest are used by the cow. Fermentation also produces gases, heat and volatile fatty acids.