In poultry birds like chickens, what thick muscular organ grinds down swallowed seeds and grains with the aid of ingested grit?
Answer and explanation
Correct answer: C. Gizzard (ventriculus)
- Step 1: Birds lack teeth to masticate food, so swallowed grains pass to the muscular gizzard. Step 2. The gizzard's tough muscular walls and swallowed grit particles physically grind food mechanically. Answer: Gizzard (ventriculus). Why not the others: The crop stores and softens food; the proventriculus is the glandular chemical stomach; caeca are blind fermentation sacs.
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