B.Sc

Hello there,
You can fill up the form anytime you want and take up December session. IGNOU gives 2 session in a year i.e June and December. So, go for December session.

You can do B.Tech or B.Sc Biotechnology. You also should understand industrial biotechnology and Science subjects on pathology and microbiology. They are totally different field. As you wanted M.Sc Biotech, see the details and then select the course.

In the current scenario, after graduation, a PG has become desirable. You can do it in any of the 3 subjects. You can also go for either MCA or MBA, as per your interest and ability to pass entrance exams. With PG in physics you have an option for academic and with Ph.D. with a research career. The same goes for chemistry and maths.

https://www.shiksha.com/science/colleges/b-sc-colleges-Indore
Refer the above given link.

Yes, B.Sc botany has good scope.

Yes, you are eligible but you must have 50% marks in your graduation.