Question

Maximum digestion takes place in which part of the cockroach?
 A. In crop
 B. In gizzard
 C. In mesenteron
 D .In esophagus

Answer 1

Hint: It is lined by the endodermal cells.Its primary function is for the digestion and it is lined by the enzyme lined secreting tissue. From this region are born eight blind, finger-shaped tubular processes called hepatic cecum or enteric cecum, or mesenteric cecum which secrete digestive enzymes.

Complete answer: Maximum digestion takes place in the mesentery of a cockroach. Mesenteron also is known as the midgut function primarily for digestion. It is lined with enzyme-secreting tissue and serves as a primary site for digestion and absorption. The gizzard is followed by a thin tube of a uniform diameter which represents the midgut or mesentery. Its region of the junction with the gizzard, which actually surrounds the stomodeal valve, is called the cardia

Additional information: Cockroaches belong to the phylum Arthropod, which has a well-established digestive system. The digestion of the starch in the oral cavity is followed by the complete crushing of the food in the crop and the gizzard which eventually enters the stomach. Digested food is absorbed through the lining of the stomach into the surrounding space called the hemocoel. The hemocoel is made up of a large number of fatty substances which are fatty cells containing fat globules, protein granules, and glycogen. Storage structures are formed. From there it is transported to different parts of the body.

So, the correct answer is in mesenteron.

Note: Digestive enzymes secreted by the gastric caeca act on food in the stomach. These enzymes include amylase, maltase, invertase, tryptase, and lipase. The rest of the carbohydrates, proteins, and fats are digested here. Digested food is absorbed through the lining of the stomach into the surrounding space called the hemocoel. The hemocoel is made up of a large number of fatty substances which are fat cells that have fatty globules, protein granules, and glycogen. They form storage structures that get transported to different parts of the body.