Hello dear...Ofcource you can get admission in B.Sc aggriculture. You got really good marks . Minimum qualification to get admission in B.Sc is 50% or 60% marks( vary from Institute to Institute) in intermediate or 10+2 with Physics, Chemistry, and Biology.

Admission in B.Sc Agricultural is done in two modes either written exam conducted by universities or Institutions offering the degree or through the qualifying examination such as , Some Universities select candidates through  AIEEA ( All India entrance exam for Admission) conducted by Indian Council Of Agricultural Research (ICAR)

EAMCET- Conducted for admission in Andhra Pradesh

PAU- Conducted by Punjab Agriculture University 

KEAM- conducted for admission in kerela

IGKV CET- conducted by Indra Gandhi Krishi Vishwavidyalaya

Hope it helps

Good luck