Gizzard function.

Gizzard function.

• A. Absorbs nutrients
• B. Grinds food
• C. Produces bile
• D. Stores fat

Answer: (B)

The main idea here is how birds mechanically digest food. The gizzard is a thick, muscular chamber that grinds up food, often with the help of swallowed stones or grit. This grinding action basically acts like teeth for animals that don’t have them, breaking down hard or fibrous material so it can be chemically digested later in the intestines. Without this grinding step, large chunks would pass through and slow digestion. Absorbing nutrients happens mainly in the intestines, not in the gizzard. Bile is produced by the liver (and stored or used elsewhere), not by the gizzard. Fat storage occurs in adipose tissue, not in this digestive organ. So grinding food is exactly the function described.

The main idea here is how birds mechanically digest food. The gizzard is a thick, muscular chamber that grinds up food, often with the help of swallowed stones or grit. This grinding action basically acts like teeth for animals that don’t have them, breaking down hard or fibrous material so it can be chemically digested later in the intestines. Without this grinding step, large chunks would pass through and slow digestion.

Absorbing nutrients happens mainly in the intestines, not in the gizzard. Bile is produced by the liver (and stored or used elsewhere), not by the gizzard. Fat storage occurs in adipose tissue, not in this digestive organ. So grinding food is exactly the function described.