Hii

If you pursue BSc. In Biotechnology and then go for MSc. Biotechnology, you will have following options after completing your masters:
Teaching Profession
Clinical Research/ PhD
Laboratory technician/ Assistant
Work in pharma companies
Food safety officer

Answering to your question with respect to salary and demand, pursuing BSc. In Microbiology/ BSc. Biotechnology and then going for MSc. Embryology would be better. This course has more demand and salary compared to MSc. Biotechnology. MSc. Embryology is a 2 year course and the course fee for would range from 4LPA - 8LPA. A Clinical Embryologist can work in an IVF Clinic along with Gynaecologist and Urologist with good salary in hand.

Choose your field of interest wisely

Good Luck!!