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  • The teeth of the cockroach are present in  Option: 1 Buccal chamberOption: 2 Cr

The teeth of the cockroach are present in
 

Option: 1

Buccal chamber


Option: 2

Crop 


Option: 3

Pharynx


Option: 4

Gizzard

 


Answers (1)

best_answer

 

Foregut

  • Foregut includes buccal chamber having mouth on one side and pharynx on the another.
  • It also includes oesophagus, crop and gizzard. 
  • The mouth opens into a short pharynx, leading to a narrow tubular passage called oesophagus.
  • Oesophagus opens into a sac-like structure called crop.
  • Crop is the largest part of foregut and its function is to store the food.
  • The crop is followed by gizzard or proventriculus. It is small, cone-shaped and muscular.
  • Gizzard possess thick inner cuticle in the form of six highly chitinous plates called teeth.
  • The major function of gizzard is to grind the food particles.
  • The entire foregut is lined by cuticle.
  • The junction of foregut and midgut consists of a ring of 6-8 blind tubules called hepatic or gastric caeca. 
  • The function of hepatic caeca is secretion of digestive juices.

 

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Gizzard possess thick inner cuticle in the form of six highly chitinous plates called teeth. The major function of gizzard is to grind the food particles.

Posted by

Irshad Anwar

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