The effect of lasers of wave length in the visible region 660-680 nm on mitotic cell divisions, germination and growth were studied in Vicia faba. The study indicated that lasers could be mutagenic causing aberration in the mitotic cell divisions while also producing changes in germination and growth of the plant. A wide range of chromosomal aberration were observed in all the four stages of mitotic cell division. The most important stickiness and non disjuction of changes observed were clumping chromosomes, bridges, laggards, micro nucleate, binucleate and elongated nucleate cells. In addition to these some other types of aberration such as inter phase with unequal sized nuclei, polyploid cells, chromatin droplets, nuclear bridges, nuclear polymorphism and multi nucleate conditions were also encountered in low frequencies. Laser exposure at 660-680 nm for 5 min caused increase in germination index in V. faba while germination index induced by exposures at 660-680 nm for 10 min was similar with control group.The change in plant height over a period of time or the growth rate of mutagen treated samples was compared with that of the control (untreated) samples. Growth rate induced by 5 min of laser exposure was the highest one. The study suggests that laser may used as a bio stimulator in agriculture. Further studies are required for elucidating the exact mechanisms by which lasers cause mutations.