Hello Somesh...After pursuing your B.Sc in Zoology , Botony and Chemistry you can find a successful career but first you have to decide your area of interest. You can find jobs in Pharma Companies, Food Companies Chemical Industry,Medical Laboratories, Testing Laboratories, Pathology Laboratories, Agriculture Research Organizations, Seed and Nursery Organizations, Medical Research, etc . You can also work as - Farming Consultant,Weed Scientist, Geneticist, Plant Biochemist , Science Advisor, Botanist , Florists, Farming Consultant, Forester, Biology Content Developer, Ecologists, Mycologist, Environmental Scientist and morejob opportunities are there.If you want high salary package and bright future it is advisable that you gain more degree. Such as M.Sc , M.Phil of Ph.D. it will also open your door for teaching line.

            For a sparking career you can also apply for competitive exams like UPSC , IBPS, Railway, SSC, CDS, Public Service Commission, DRDO, etc.

Hope you're query is resolved.

All the best.