EVERYDAY SCIENCE

Detailed explanation-1: -gizzard, in many birds, the hind part of the stomach, especially modified for grinding food. Located between the saclike crop and the intestine, the gizzard has a thick muscular wall and may contain small stones, or gastroliths, that function in the mechanical breakdown of seeds and other foods.

Detailed explanation-2: -The gizzard contains chitinous plates, which are tooth-like hard structures that aid in the grinding and crushing of food particles.

Detailed explanation-3: -The gizzard is the mechanical stomach of a bird. It is located just after the true or glandular stomach in the gastrointestinal system. Since poultry have no teeth and swallow feed whole, this muscular organ, sometimes called hen’s teeth, mechanically grinds and mixes the bird’s feed.

Detailed explanation-4: -The food trickles from the crop into the bird’s stomach (proventriculus or gizzard) where digestive enzymes are added to the mix and physical grinding of the food occurs. The gizzard is why chickens do not need teeth.

Detailed explanation-5: -Final answer: In cockroach grinding of food particles is performed by gizzard.