Dear Student ,
Excretory products in
(a) Plants - Carbon Dioxide, Water, Oxygen and others including latex , resin , opium , tannin.
Organs Involved - Stomata , Leaves
(b) Animals - Carbon Dioxide, Nitrogenous product like Ammonia, Urea, Uric acid and certain ions like Na+ , Cl- , K+ , Sulphate etc. Sweat is also a excretory product.
Organ Involved - Kidney , Urinary Bladder , Liver , Lungs , Skin , Small intestine , Large Intestine.
Regards!