Dear

According to me you can plan for Bachelor degree in zoology Hons or Life sciences and then pursue Master degree in respective domain like

MICROBIOLOGY
BIOTECHNOLOGY

Then go for B.ed or Net exam because through that you have chance to get job in School and Universities as well.

You need to open your doors open for better opportunities don't close it ( like graduation and B.ed process ).

All the best

Complete your graduation from biology..and then do BeD..once you r done with this complete your masters in biology (sub branch which u will choose).
After this do MeD.If u have these degrees u can easily get admission in colleges and further if u do phd then u can even have option of getting good job in a university..
Wish u all the best for your future!!!

You can do B Ed from some good college to move forward in career as a teacher