Hello,

I assume you must have scored somewhere between 55-60 percent. This percent is not very bad. If you're willing to take admission into Bharath Institute of Higher Education and Research then for all the B.Sc Course admission will be based on merit list based on the Qualifying exam, you don't need to appear for any entrance exam somehow if you're willing to take admission into B.sc Agricultural then only for this course you have to appear for entrance exam called BEEE.

The minimum percentage that is required to fill the application form for B.Sc Microbiology is 50 percent. And you must have scored more than that so can apply. But there are lot of colleges do exists in Tamilnadu whose eligibility criteria is just 45 percent like Sri Krishna College of Arts and Science.

To know more about Bharath Institute of Higher Education and Research, Chennai, please go through this link

https://www.google.com/amp/s/www.careers360.com/university/bharath-institute-of-higher-education-and-research-chennai/amp

Good Luck.