B.Sc

You have following options with you in respect of higher education:
1. M.Sc mathematics.
2. M.Sc statistic.
3. MCA.
4. MBA.
5. Lateral entry into B.Tech.
6. PG Diplomas such as Big Data, Data Analytics, etc.
All options are equally good. You can chose any based on your interests. You are eligible to appear for government jobs and public sector banks based on graduation degree.

If it's equivalent to B.Tech or BE in India, you may definitely do it. Check the details at institution of engineers to see how you can register.

University of Saskatchewan, Canada has one of the best agriculture course. Beloit USA, La Trobe Australia, University of Illinois are few more.

With B.Sc IT degree you have all each got basic graduation degree to be a software engineer. You can get entry level jobs in small and medium IT companies now. It is recommended that for a good career you may do either MCA or M.Sc IT/CS from a good college.

Yes, you can but you should have basic computer knowledge and programming language knowledge.

Gramodaya Vishwavidyalaya,Shaikpara; A.R.M. Polytechnic, Manipur University, Sant Longowal Institute of Engineering and Technology, Dr. Babasaheb Ambedkar Marathwada University, Mahatma Gandhi University, Guru Nanak University, College of Technology and Agricultural Engineering, Swami Ramanand Teerth Marathwada University, University of Madras, University of Bombay. These are some of the reputed colleges for B.Sc in food technology.