Biotechnology

After your B.Sc in biotechnology, you can opt for MSc in Biotechnology or Genetics. You can also opt for biochemistry as a field for masters in the same. Theses are one of the best options which you have for your masters.

Hi
You can definitely apply for the courses in Biotechnology. Just check the budget and preference of your country and apply.

Hi
You need atleast 75% in bachelor's + GRE/ GMAT + IELTS /TOEFL to be eligible for master's.
Every university have their individual requirement so check accordingly.

I think you don't have clear concept about that.
B.Sc is just Undergraduate degree where as PhD is doctors degree.
For PhD you have to first qualify different Jrf exams without which PhD is of no value . For sitting in exam of different Jrf( CSIR NET-JRF, DBT- JRF, ICMR-JRF ) of life sciences you must have post graduation degree in any subject of life science.
All the best.

As PCB are not eligible for IIT's I would Suggest Some best colleges Like Lovely Professional University, VITU, BHU etc. for taking admission.
There is good scope and Placement in B.tech courses in Biotechnology at LPU and VIT. But if you are choosing for BSc it would be better if you would go for Masters too. as you would usually get low paying jobs after simple B.Sc/BSc(Hons).