describe in brief the structure of alimentary canal of cockroach.
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The alimentary canal of cockroach is divided into foregut, midgut, and hindgut. The mouth opens into a shorttubular pharynx, leading to a narrow tubular passage, the oesophagus. The oesophagus opens into a sac-like - crop, which is used for storing food. ... The entire foregut is lined by the cuticle.
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Cockroach has a pair of salivary glands. Saliva contains amylase which converts starch into sugar. The oesophagus is short in the length tabular structure while crop is large pear shaped structure. But both are thin walled structure.
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