Hello Dear,For the admission in Bsc (biotechnology) yes you have attend one entrance exam like AIIMS. in minimum mark should be 60%.(note neet isn't not important)and if you want to take some top University for that university admission you to attempt test.

Yes ,you have to do entrance exam for admission in Bsc biotechnology. These are simple steps 1) fill the entrance form for prestigious university like DU, CCSU, Jamia, AMU etc or mumbai University is also good .2) visit Official website daily for checking that admit card is released or not.  3) Download admit card or check merit list through website.  4) and after that you will be getting admission. And there is also management quota in many colleges , so you can try there too but there fees will be much more than normal college fees . So decision is yours, I hope this helps to you. Thank you!!!