Poojitha, NEET is an entrance exam for admission to Medical, Dental, Ayush and Veterinary courses across India. Now so it is ideally for Biology Students. But yes if you can study Biology as an additional subject and secure the required aggregates, you can appear for NEET. If you belong to General Category, you should score a minimum aggregate of 50% in Physics, Chemistry and Biology. It is 45% for OBC,SC,ST and 45% for PWD Candidates. If you can study Biology as an additional subject even from NIOS, you will become eligible for NEET.