Hello dear student !

There are so many options for you for your future if you have done 12th with biology. You can go for medical course such as MBBS , BDS, BAMS, BHMS , etc. If you don't want to become a doctor than you can also go for Research purposes as scientist. You can also go for teaching after doing graduation or masters. Also, you can also prepare for various government exams at different levels.

Hope this will help you !