Science

Yes, you can pursue B.Sc Agriculture but you should have completed class 12th with science stream. There is an ICAR (Indian Council of Agri Research) scholarship programme for toppers admitted to the degree.

No, science is easy your concepts from class 9 onwards are clear. If you take science and if you really want to join a professional course, start preparing from the first day of class 11th then everything will be easier for you.

Hello,
If you have completed M.Sc in Maths, Physics, Chemistry or Biology, you can become a lecturer by taking CSIR NET Exam. The exam is conducted every year for candidates seeking a career as a lecturer and researcher.
The best thing is that you will get a scholarship worth INR 25000 per month after clearing JRF exam.

She can do it once she finishes her B.Sc. Whichever college she wants to join all she needed is above 50% in graduation as the graduate degree will be provided to her later, so the college will ask for the last year's mark sheet and the course completion certificate of UG degree that would be enough.