Ph.D

Hi Nisar,
Your ultimate goal is a Ph.D, so the programme combination won't really matter. Education system abroad is very different also. Stick to your goals, perform well in class, engage yourself with high-class research work and publication and try to enroll in MS -Ph.D abroad for better job prospects.

You can do PhD in Management after PGDM if you have done PGDM if degree is recognised equivalent to MBA by Association of Indian Universities (AIU).

Both B.Sc-M.Sc-PhD and B.Tech-M.Tech-PhD are equally good option to achieve your goal of PhD. There are lots of opportunities in the field of Biotechnology, therefore, I will like to recommend you to opt for Bio-Technology.

Hi Karan,
Your question is incomplete since you have not specified about Ph.D field/specialization. Please post a complete question with details regarding your graduation, PG qualification, NET status, etc.