Hey, there, 

As per your query I would like to tell you that according to your rank and based upon the previous year cuttoff marks, you definitely have chances of getting admission in the bsc. bio under obc category. 

As per year the cuttoff marks varies depending upon the the difficulty level of questions marks and the number of students appearing in the exam. 

Hopefully it's will usefull to you. 

GOOD LUCK.