M.Sc. Botany is a 2-year postgraduate course in Botany. For eligibility purposes, a candidate should pass B.Sc. Degree or equivalent with a recommended score from any recognized university.M.Sc. Botany course offers specializations to the students in the areas such as bryology, forestry, cytology, phycology, plant morphology, agronomy, plant systematic, ethnobotany, economic botany, phytopathology, horticulture, genetics, plant anatomy, lichenology, plant ecology, playnology, phytochemistry and palaeobotany,you can go for any of these courses under Botany.Hope this helps you!Thank you.

Hi Bhawana,

If you want to do M.Sc in Botany it is totally fine. You can also go for other lines such as biotechnology, plant genetics, plant physiology, etc.
You should also note that changing the honors subject is okay but some colleges may not take up students from other honors subject. Do your research and then apply for the courses mentioned.

Good luck!