Abstract: The influence of Pb treatment was investigated using phytochemistry as stress indicator. Excess of Pb in Phaseolus mungo and Lens culinaris exhibited higher dry root, stem and leaves with decrease in mineral ions (Na, K, Ca, Mg, Fe, Mn and Zn) uptake in both species. The shoot elongation was negatively correlated with Pb concentration as external morphological symptoms of toxicity were observed. Seed germination of both species grown hydroponically with PbCl2 were highly inhibited. Results obtained by atomic absorption Spectrophotometry from measurements of different essential macronutrient and micronutrient with Pb content both in roots and shoots showed that Pb accumulation was more pronounced in root than shoot. Total protein contents in the seedlings of Phaseolus mungo were found to be increased in shoot as compared to roots whereas it is significantly reduced in root and shoots of Lens culinaris. Amino acids in the roots of both species were found to be increased and decreased in the shoots of Lens culinaris while higher concentration of amino acids was observed in shoots of Phaseolus mungo. The higher density and smaller ionic radii of heavy metal plays an integral role to block the asses of essential mineral ions in plants and alter physiological processes of both species.