A Cow's Rumen, or First Stomach, Provides the Ideal Environment

question 202

Multiple Choice

A cow's rumen, or first stomach, provides the ideal environment for a variety of microbes.When a cow consumes grass, these microbes digest the grass, releasing nutrients, which both they and the cow use.While most of the microbes remain in the rumen, some are killed during digestion and provide additional nutrition for the cow.This complex relationship between the cow and its microbes has features of which two categories of interactions?

• A) Competition and mutualism
• B) Mutualism and predation
• C) Commensalism and amensalism
• D) Predation and parasitism
• E) Amensalism and competition

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