Dear friend .50–55%marks separately in physics ,chemistry ,biology/biotechnology in 10+2 is required to write the national level competitive exam ICAR AIEEA ,the exam through which you can secure an admission to BSc agriculture in reputed colleges in India .In the entrance test ,if you belongs to general category ,you need to get an all india rank in within 3000 to get admission in a good college. It takes 60 students per year in BSc agricu;ture every year.