Why excretion does not pose problem in plants? Reason
Excretion is the process of elimination of waste materials from the body. For plants the rate of catabolic process is much slower than that of animals of same weight and or mass. Therefore, metabolic wastes accumulate slower. Waste products of catabolism are used by green plants in their anabolic processes. Green plants don’t excrete nitrogenous wastes (on the contrary - they recycle it). Metabolism of plants is mostly carbohydrate based. Its end products - CO2 and water - are far less harmful than nitrogenous wastes produced by protein metabolism of animals.