B.Sc

There is huge scope after graduation in biology. Possible different courses that you too can think of doing will of course depend on your motivation and liking. I am attaching a link that will give you all the required information about this issue. https://www.shiksha.com/science/articles/career-scope-job-opportunities-after-bsc-biology-course-blogId-19401
Best wishes to you.

It is possible, but you have to get approval from both the colleges/ universities before initiating the change

Yes, you are eligible for the same.

Candidates who have completed their graduation in event management or any other discipline, or are appearing for their final graduation examinations are eligible to apply for these courses. They must have secured at least 45% marks in graduation in order to qualify for the MBA programme.

https://www.shiksha.com/medicine-health-sciences/dietics-nutrition/colleges/colleges-Pune
Also visit http://www.ssou.ac.in/campaign/bsc-facebook/.

You are not eligible for technical but you may be eligible for nontechnical i.e. ground duty.

KCET exam is to be written for doing B.Sc Agriculture in Karnataka.

The foreigner can take the admission for their preferred course through overseas study centers of IGNOU. IGNOU will provide the list of overseas study centers and courses are available in the PDF file. Otherwise, the foreigner can take the admission through any one of the regional centers in India.

Yes,
IISc offers BS (Bachelor of Science) course as UG Full Time Course for duration of 4 years. Selection to the BS program at IISc Bangalore is done on the basis of marks secured in Kishore Vaigyanik Protsahan Yojana (KVPY) exam / IIT mains/ IIT advanced/ NEET.