Dear Raksha ,

As you have not told about any Entrance exam that you have appeared , so I am giving the basic eligibility criteria that is required to get admission in B.Sc Agriculture courses :

You should have scored minimum 55% marks in your 10+2 qualifying exam . So you are requested to calculate your 12th board score percentage according to your marks ! The higher percentage you obtain , the higher merit rank you can gain .

Well, you can refer to this link  for more details about Agricultural sciences:

https://www.careers360.com/courses/agricultural-science-course#:~:text=For%20undergraduate%20Agricultural%20Science%20Courses&text=They%20are%20required%20to%20study,admission%20in%20a%20good%20college.

Hope this helps !

Best wishes !!