NEET BIOLOGY

Detailed explanation-1: -Insects including cockroaches, excrete nitrogenous waste in the form of soluble potassium urate which is liberated into the hemolymph and taken up by the cells lining the Malpighian tubules. The tubules facilitate the absorption of urate by stirring up the blood.

Detailed explanation-2: -Final answer: The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of Potassium urate.

Detailed explanation-3: -"While many insects excrete waste nitrogen in the form of uric acid, instead cockroaches internally store it that way.” Cockroaches can take advantage of nitrogen windfalls by stockpiling nitrogen in uric acid, then drawing upon these reserves when other sources of nitrogen are lacking.

Detailed explanation-4: -Excretion in cockroach is performed by Malpighian tubules. Each tubule is lined by glandular and ciliated cells. They adsorb nitrogenous waste products and convert them into uric acid which is excreted out through the hindgut.

Detailed explanation-5: -However, cockroaches have 2 additional types of cell in the fat body: mycetocytes harboring an endosymbiont, Blattabacterium cuenoti, and urocytes depositing uric acid in urate vacuoles.