A minimum of 50% marks each in Physics and Mathematics at the 10+2 level and a minimum of three years of graduation degree (or appearing for the final semester exam) with 60% marks from a recognized university.

Since you have completed your B.Sc. with Botany, Zoology, and Environmental Science, and are confident of passing with over 60%, you meet the educational qualifications for the Flying Branch in AFCAT 1 2025.

• Ground Duty (Technical): This requires a four-year engineering degree or an equivalent qualification with minimum marks as specified for each role. Your B.Sc. wouldn't qualify for this branch.
  
  
• Ground Duty (Non-Technical): This has openings for graduates from any stream, including your B.Sc. However, there might be specific requirements for each post (e.g., minimum marks, specific degrees preferred).
  
  https://competition.careers360.com/exams/iaf-afcat
  
  I hope it helps!