Hello aspirant

Yes you can appear for biology exam from NIOS then you can appear for neet if  you fulfill the eligibility criteria for neet .

NIOS is National Institute of Open Schooling.  It is government recognized and NIOS marks are accepted in neet .

Make sure you must get minimum  150 marks in physics + chemistry + biology .

After the results you can apply for neet.

Eligibility criteria for appearing Neet

The candidate must be an Indian,  OCI are also allowed .

The age of candidate should be 17 years .

The candidate must have passed class xii with minimum 50% marks in physics,  chemistry and biology.