Multiple choice

Ruminants masticate stomach content more leisurely by ________.

  1. peristalsis

  2. retro-peristalsis

  3. Both 1 and 2

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ruminants chew their cud through retro-peristalsis, which is the reverse movement of stomach contents from the rumen back to the mouth for additional mastication. This process, called rumination, allows more thorough breakdown of fibrous plant material. Regular peristalsis moves food forward through the digestive tract, not backward.

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