2
Question
The following are the parts of alimentary canal of cockroach and arrange them in correct sequence (anterior and posterior end).
(A) Stomodael valve
(B) Crop
(C) Ileum
(D) Proventriculus
(E) Mesenteron
(F) Colon
The following are the parts of alimentary canal of cockroach and arrange them in correct sequence (anterior and posterior end).
(A) Stomodael valve
(B) Crop
(C) Ileum
(D) Proventriculus
(E) Mesenteron
(F) Colon
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Solution
The correct option is C B- D- A- E- C- F
The alimentary canal is divided into three main portions:
Foregut: it consists of mouth surrounded by mouthparts. The mouth cavity is pharynx. It continues as the oesophagus and then the canal enlarges into the crop which is thin-walled. The crop opens into a short, muscular organs, the gizzard or proventriculus.
Midgut: At the junction of the gizzard and the stomach are valves called the stomodael valves. The midgut forms the mesenteron and consists entirely of stomach and ventriculus.
Hindgut: The hindgut is a coiled structure consisting of anterior ileum, middle colon and posterior rectum.
Thus, the correct answer is option (C).
The alimentary canal is divided into three main portions:
Foregut: it consists of mouth surrounded by mouthparts. The mouth cavity is pharynx. It continues as the oesophagus and then the canal enlarges into the crop which is thin-walled. The crop opens into a short, muscular organs, the gizzard or proventriculus.
Midgut: At the junction of the gizzard and the stomach are valves called the stomodael valves. The midgut forms the mesenteron and consists entirely of stomach and ventriculus.
Hindgut: The hindgut is a coiled structure consisting of anterior ileum, middle colon and posterior rectum.
Thus, the correct answer is option (C).
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