For the course of BSc in Microbiology, the student needs to pass 10+2 with Biology as a subject in 10+2. As you have Biology in 10+2, you are obviously eligible for the curse of BSc in Microbiology.

The top colleges in West Bengal offering the course of BSc in Microbiology are-

GNIPST Kolkata - Guru Nanak Institute of Pharmaceutical Science and Technology

Oriental Institute of Science and Technology, Midnapore

Swami Vivekananda Institute of Modern Science, Kolkata

For more information regarding BSc in Microbiology consider the link below:

https://www.careers360.com/courses/bsc-in-microbiology

I hope this helps. Wish you a great eve!