Botany

Dear,
As per your query, you may consider these options:
Wildlife Science
Psychology
Environment Science
Forensic Science
Stem cell research
Microbiology
Horticulture
Genetic Science
All the best.

All the courses you mentioned in your question has a good scope, just select any subject of your choice and field in which you want to make your career.

Generally, students don't opt for chemistry as it has a lengthy syllabus. Also, it depends on your area of interest.

Chances are always subject to research qualifications and it doesn't matter which subject you choose. So, excel first in research.

Hi,
There is not much difference in salary whether you do B.Tech or BBA or economics honors but your knowledge, skills, market research, commitment and positive attitude will matter in future for growth and salary.

It depends on two things:
1. You improve your results with all hard work and planning to study.
2. It depends how much competition you face.
It is possible to get if you keep. Your knowledge is strong. Entrance will be easy for one who has studied well.

There are numerous careers in botany, including soil and plant scientist, biophysicist and biochemist, biological technician, environmental scientist and specialist, mycologist, plant breeder and horticulturist. While a Bachelor's degree might get you started in this field, a Master's degree or doctorate is generally needed to advance.
I would suggest you to startup with a job and am sure you will start liking it and do Masters with distance learning.

It is good to see your expressions. If possible, convince your parents and take another course you like, which is career oriented as well. Otherwise, remember, no course is worth, it is you who make it worth and interesting. Botany is about life, it can give you great knowledge.