Hello,

Yes, you can get admission in IISER 2020 without mathematics but with Biology, as the eligibility criteria specifies that the student has to be from the science stream in 12th with physics, chemistry, Mathematics or Biology as compulsory subjects.

Therefore, if you have Biology in place of Mathematics you are eligible for iiser admission.

For other eligibility related query visit the link below:

http://www.iiseradmission.in/index.php/pages/eligibility

All the best!