If youre interested in Research, BSc Biotechnology might be a better options, with enormous research scope and career prospects in domains like Biomedical Technology, Bioinformatics, Biomaterials, Genetics, Drug Design and many other areas.

If youre interested in a Teaching Career maybe with Schools, Coaching Institutions, Edtech Platforms or maybe prepare for Government Service Examinations, you might consider B.Sc. Zoology as the preferred option.

Seems youre in or have passed 12th in PCB. Do follow the link below for excellent courses and career options after 12th in PCB

https://school.careers360.com/articles/courses-after-12th-pcb