An Australian insect produces uric acid and no other form of nitrogenous waste - HSC - SSCE Biology - Question 12 - 2011 - Paper 1

The adaptation of producing uric acid instead of other nitrogenous wastes, such as urea or ammonia, primarily serves to conserve water. Uric acid is less toxic and is excreted as a solid or paste-like substance, which requires minimal water for excretion. This is particularly advantageous for terrestrial insects, especially those living in arid environments like Australia, where water conservation is crucial for survival.