With a background biology from class 12th you can pursue a range of courses in college such as

1 Bachelor of Science( B.Sc.): in biology, biotechnology, botany, zoology or environmental science

2 bachelor of pharmacy(B.pharm): for a career in pharmacy

3 Bachelor of physiotherapy (BPT): if you are interested in physical therapy

4 Nursing of paramedical courses

5 Bachelor of ayurvedic medicine and surgery(BAMS)or Homeopathy(BHMS) for alternative medical fields

6 agriculture science or microbiology