Dear Sekhar, if you are enquiring about B.Sc Agriculture, the eligibility criteria is that you should have completed ypur 10+2 in Science Stream wih Physics, Chemistry, Biology or Mathematics as your core subjects with a minimum aggregate of 50%. It is 45% for Reserved Categories. Few Institutions conduct Entrance examinations and few of them are ICAR, EAMCET, PAU EE, IGKV CET and KEAM. There are fww Institutions which conduct admissions based on the merit in the highest qualification.