B.Tech in Karnataka

The cut off last year was starting from 98/99. But still, do the admission process and once gets information from the CU. And, fill the other courses form also. There is no loss of yours while you have ready with the second option.

There are over 20 B.Tech in Biotechnology Engineering colleges in Karnataka. Please refer to the link provided below for a detailed list of these colleges. You should be able to navigate to a college of your choice using the filters on the web page.
Regards.
https://www.shiksha.com/b-tech/colleges/b-tech-in-biotechnology-engineering-colleges-karnataka

In Karnataka:
1. Acharya Institute of Technology

MS Ramaiah Institute of technology in Karnataka, VIT, Vellore, PSG, SASTRA in Tamil Nadu, IIT BOMBAY, College of Engineering Pune, Veermata Jijabai Technological Institute of technology in Maharastra, IIT DELHI, NSIT, DTU, IP University in Delhi.

Hello
You need to pass your intermediate (+2) with a very high score to get into agricultural university.
Cutoff is 92% for general merit for 2016 batch.
Upto my knowledge there are no private seats in agricultural university.If your family occupation is agriculture, there will special exam through which you can join even.