Other than MBBS there are many fields available for Biology students with a good scope.

BDS (Bachelor of Dental Surgery)

B.Tech (Medical Biotechnology)

B. Tech (Biotechnology)

Bachelor of Physiotherapy (BPT)

Bachelor of Optometry (B.Optom.)

Bachelor of Pharmacy

Bachelor of Homoeopathic Medicine & Surgery(BHMS)

Bachelor of Ayurvedic Medicine & Surgery (BAMS)

Feel free to ask me in the comment box if you are having any further doubts

hope you find it helpful 

Thank you