In the present study chlorophyll a (Chl. a) and b (Chl. b) content of ten different plants have been recorded. The qualitative difference of chlorophyll a (Chl.a) and b (Chl.b) content between young and adult leaves were observed. A total of ten plant species were selected namely Mango (Magnifera indica), Hibiscus (Hibiscus rosa-sinensis), Gavua (Psidium guajava), Almond (Prunus dulcis), Bryophyllum (Bryophyllum pinnatum), Sapodilla (Manikara zapota), Neem (Azadiracta indica), Ashoka (Polyalthia longifolia), Ficus (Ficus benjamina) and Datura (Datura metal) and were used for analysis of chlorophyll content. In all the cases the adult leaves showed higher chlorophyll content in comparison to young leaves. This has been proved that the age of leaves was an important factor for chlorophyll content.