Agriculture

85-90 percentile would be enough for a call I guess.

Vocational courses focus on specialised practical skills. These courses offer insight to requirements of particular types of jobs. Vocational courses provide specialised learning which is an added advantage. There are diversified courses to provide skilled manpower in the organised sector.
If you have completed both your B.Sc and B.Voc you should be able to secure a decent job upon completion of your course. Good Luck!

Please refer to the link provided below for details regarding entrance exam for admission into a course in agriculture (ICAR AIEEA 2018). Important information like exam pattern, syllabus, preparation strategies are mentioned at the link provided below.
https://www.shiksha.com/science/exams/icar-aieea

As you are a student of science, you can choose general science, math, computer science, social science and English. These subjects are learned in B.Ed as method papers. You need not to worry about choosing any subject because each subject covers minimum level of knowledge through which you will learn how to teach a subject in a class systematically.