give a brief review on digestive system of cockroach with diagram. Please don't copy from internet.
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Digestive system in cockroach:
Cockroach is an omnivorous. It can eat all kinds of organic matter. The nutrition in cockroach is holozoic.
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. ... Gizzard is a small, rounded thick walled with muscular chitins lining structure.
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