From electronics such as nanodevices, nanochips to the use of nanoparticles in medicine, nanotechnology has developed rapidly due to the advancement in the field of nanoscience. Therefore, these nanoparticles are widely used in many industries and consumer products. Beneficial silver and platinum nanoparticles have been considered for our study. The toxicity of the silver and platinum nanoparticles was assessed on the representative seed systems Solanum lycopersicum (tomato) and Raphanus sativus (radish). The platinum nanoparticle which is said to be nontoxic was subjected to the toxicity testing. The nanoparticles employed in this study were produced by an ecofriendly green synthesis method. © 2013 IEEE.