Out of 90 Questions of Biology... 80 - 85 questions are usually from NCERT book. So.. you can easily get 300+ marks. For that you have to read the whole NCERT book thoroughly and make your concept clear. All the best dear.

yes NCERT biology wil definately fetch you a score of 300+ in biology just concentrate on the topics you read and revise them at the level of infinity. Some topper once said that "NCERT is to be memorised to the point until the stops and commas become favourable".

Dear Tanisha,

In NEET biology section 85% paper is directly from NCERT book and rest 15% is based on concepts. 

You can easily score 300+ marks in biology if you complete your NCERT books alongwith previous year papers.

Exercises which are given after completing each topic are very important. You can also get direct questions from there.

All the Best!!