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Final answer:Thenitrogenous wasteinmollusksis removed by different mechanisms depending on their specific adaptations and habitats. Some mollusks use nephridia, while others use flame cells or malpighian tubules.Explanation:Mollusks, such as snails, clams, and squids, producenitrogenous wasteas a byproduct of their metabolic processes. Theexcretory systemin mollusks is responsible for removing this waste from their bodies.There are different mechanisms by which mollusks excrete nitrogenous waste, depending on their specific adaptations and habitats:Nephridia: Some mollusks, like freshwater snails, use specialized structures called nephridia. Nephridia act as filters, removing waste from the mollusk's blood and eliminating it through small openings called nephrostomes.Flame Cells: Other mollusks, such as marine snails and bivalves, have a different excretory system called the protonephridia. This system consists of flame cells that remove waste through tiny hair-like structures called cilia.Malpighian Tubules: Mollusks that live in terrestrial environments, like land snails, use a different excretory system called the Malpighian tubules. These tubules remove waste through the process of active secretion.Overall, mollusks have evolved different mechanisms to efficiently remove nitrogenous waste based on their specific habitats and physiological adaptations.Learn more about the removal of nitrogenous waste inmolluskshere:brainly.com/question/983921#SPJ14...