In many insects absorption of nutrients occurs through microvilli of midgut epithelial cells
by diffusion. Absorption of water and ions occur through rectum. In cockroach lipid absorption
occurs through crop. In termites and scarabaeids (White grubs) absorption occurs through ileum.
In solid feeders, resorption of water from the faeces occurs in the rectum and the faeces is
expelled as pellets. In sap feeders (liquid feeders) the faeces is liquid like. The liquid faeces of
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