Excretion different Organs in Invertebrates, , Chapt 19, , Biology, , CBSE, biology , excretion

Animals accumulate ammonia, urea, uric acid, carbon dioxide, water and ions like Na+, K+, Cl, phosphate, sulphate, etc. , either by metabolic activities or by other means like excess ingestion. These substances have to be removed totally or partially. In this chapter, you will learn the mechanisms of elimination of these substances with special emphasis on common nitrogenous wastes.