B.A

It is not necessary to study associate of applied science before studying B.Sc applied science. However, you may need a minimum pass percentage in class 12 to apply for admission to BAS.
Please check for eligibility criteria for B.Sc applied science as mentioned below:
The basic eligibility criterion for pursuing a B.Sc (Applied Science) degree is qualifying 10+2 or equivalent examination in Science stream from a recognised board of the country. Some reputed colleges and institutes demand a minimum of 50% marks in 10+2 as qualifying criteria to secure admission in this degree course.
Also, a few of the very reputed colleges and institutes do conduct entrance examination to get admission to their B.Sc. (Applied Science) degree course. Selection to the degree course in these colleges is based on marks secured in the final merit I.e. total marks aggregated in the final exams of 10+2 and the entrance exam.
Admission Process for B.Sc applied science:
The admission to the B.Sc.in applied science courses is based on Class 12th percentage. Some universities also conduct their entrance exam for admission.
There are various colleges which offer 3 to 5 years Bachelor of Science (B.Sc.) programme. Each college has different admission procedure for this programme. They give admission on the basis of the merit of Class 12th.
Some public and private college also conduct examinations for the admission to B.Sc in applied science degree courses.
Regards.