Hii

After BSc. you can go for MSC course(2 years). ALso there is option of Integrated MSC and PhD.( 3 to 4 years)
Now that you have 3 different subjects in Bsc, you need to know about all the three subjects to choose the right one.
MSc Biotechnology -
It is a course in applied biology and involves the use of living organisms along with the bioprocesses in engineering and technology, and in medicine.
this course would deliver professional skills to the student in the field of technology along with use of biological matters. You will also learn about molecular biology, Genetic engineering, agricultural biotechnology, applied microbiology, bioinformatics and bioprocess technology.
SCOPE :
You can be employed in the areas of planning, production and even management of bio-processing industries.
You can also find job in pharmaceutical companies, food manufacturinf units, laboratories, even in agriculture, environment and chemical departments.
You can also become a researh Associate and further become a scientist after your PhD.
JOB TYPES -
Business development manager, Chemical engineer, Environment engineer, biotechnologist, Environment specialist, Lab Technician, Research associate, Research scientist, Professor, Medical representative etc.
MSc Botany -
This is again a branch of biology but it would invole the scientific study of plan life. It covers a wide range of scientific disciplines concerned with the study of plants, algea, and fungi. You will learn about microbiology, phycology, mycology, genetics and genomics etc.
SCOPE :
You can become a taxonomists, ethnobotanists, pathologist, palaeobotanistsm palynologists, geneticists, Weed scientist etc.
You can work as a lecturer in top insitutes or a research scientist in top Scientific Labs.
You also have an option to join Botanical Survey of India and other government departments of science.
Top Employement Areas :
Drug companies, Nurseries, Food companies, Oil industry, Fruit growers, Seed Compnies, Paper companies, biological supply house, national park service, Department of Environmental protection, Plant health inspection services, Public health service, Medical Plant resource labs, forest service etc.
JOP TYPE :
Contentn analyst, Marketing executive, Research associate, Clinical data analyst, research scientist, Lecturer, Diagonostic specialist, Medical coder, etc.
MSc Chemistry -
This is a branch of science which will involve science of matter and changes around us. It is concerned with compositionm behaviour, structure, and propertiess f matter as well as the changes it undergooes during chemical reactions.
SCOPE :
You can get jobs in food and drink industries, utilities, and energy research organisations.
Also you have a scope in medical organisations.
Also you can join scientific research organisations and agencies,
JOP TYPES :
Chemistry professor, Scientist - synthetic labs, Chemistry content developer, Chemistry research officier, Soil scientist, chemmical scientist, fertility scientist, Application scientist, Research associate, Research officier etc.

Other than these three, you can even go for MSc, zoology, microbiology, biology, bio- chemistry, etc.
After your Msc, you can go up for PhD or even Mtech in you particular field or relevent fields.
SO now you have the details and you can choose as per your choice and interest which stream you need to go with.

Hope this helps
Thanks!!