Hello

Yess Bsc biology Hons and Bsc. Biological science both are same course which deals with the study of living life, its formation, structure , development , advancement and many more things. It includes subjects such as Botany, Zoology, Genetics, Microbiology , Biodiversity, Although both courses are same but subjects might differ slightly.  yes you can do Msc with  Biotech and agriculture after bsc in biological sciences. If you have really interest in Biotech then go with it  you can complete your msc in industrial Biotechnology which deals with the study of microbes on industrial purpose and making them useful for production of vaccines, medicines, beverages and many more things, by completing you can join both pharmaceutical and food industries. I hope it will help you .

All the best !!