Botany

Yes, with a total of 43 seats available out of which 22 are for general 15 for International, for OBC 12, for SC 6 and for st 3.

Yes, Hansraj has got the best faculty for botany in Delhi University. I myself is a student of Hansraj College and believe me, Hansraj is the best for botany.

Congratulations Sourabh for your performance. Some best universities can be as per your graduation background:
1. Banaras Hindu University (BHU)
2. Calcutta University
3. Anna University
4. IITs through JAM.

Yeah sure. Test is tomorrow if you have filled for it.
Best of luck.

Please refer to the link provided below for details on how to calculate best of four percentage for B.Sc at DU.
DU Science Admission Cut-offs:
How to calculate the best of four percentage:
https://www.shiksha.com/science/articles/du-science-admission-cut-offs-2016-how-to-calculate-best-of-four-percentage-blogId-12765

No, without entrance exam, it is not possible, but you can talk to officials because most of the colleges have management quota, you can get a seat through management quota.

There are over 140 M.Sc in Botany colleges in India. Please refer to the link provided below for a detailed list of these colleges. You should be able to navigate to a college of your choice using the filters on the web page. Download colleges brochure, read questions and student reviews. Compare colleges on fees, eligibility, placements and other details at this link.
Regards.
https://www.shiksha.com/science/colleges/m-sc-botany-colleges-india