Hello OM,

IITs are the institute which offers Engineering courses at undergraduate, post graduate and Doctorate level. To get into IITs, it is necessary for you to appear for JEE mains, clear it and then appear for JEE advanced and get a good rank to get any branch in IITs.

But to appear for IIT JEE exams, it is mandatory for students to have studied mathematics physics and chemistry at 12th standard. As you are studying Biology in your 12th, so you won't be eligible for appearing JEE entrance exam. However if you want to go for IITs seriously and want to take admission in engineering, you have to do your class 11th and 12th in physics, chemistry and mathematics, then only you can appear for the exam and secure your admission in IITs.

Read more:- https://engineering.careers360.com/exams/jee-main

Thank you!