B.Sc

Don't look at the percentage. Strive for course you want to take. There is no mention of the name of the college in your degree.

Yes, you can take that course.

Don't look at the college. Strive for the course you want to take. There is no mention of the name of the college in your degree.

If you are from OBC or SC/ST, then I think you should immediately check cut off lists, but if you belong to general category, then you may not get admission, because cut offs for general are usually above 90.

UGC NET for Sciences and other subjects demands a Post-Graduation and an OG Diploma, which is not equivalent to Post Graduation / M.Tech or M.Sc. Degree is not accepted. You should pursue a PG Degree like M.Tech or M.Sc. And then apply for NET-UGC Test.

Yes, you will get a seat, but you need to have all your certificates.

Which college or University you are targeting?

Visit the link given below where you can get jobs, scope, salary, eligibility and other details about career in forestry.
https://www.shiksha.com/science/colleges/b-sc-forestry-colleges-india

The eligibility for M.Sc in food and nutrition is B.Sc Home Science or Family and Community Sciences/Clinical Nutrition and Dietetics/Food Science and Quality Control/ Nutrition and Dietetics/B.Sc with Human Nutrition/Applied Nutrition/Food Science and Nutrition/ Clinical Nutrition and Dietetics/ Food Science and Quality Control with a minimum of 50% marks in aggregate from a recognized board or institution.