B.Sc

The best colleges in Telangana or in South India are-
The Osmania University,
Guru Nanak University,
Nalsar University of Law etc.

You can refer to the link given below for cutoff-
https://www.shiksha.com/college/mount-carmel-college-palace-road-bangalore-24896/course-b-sc-botany-zoology-247365

PGDM courses are industry oriented unlike MBA, which are more theoretical in nature. PGDMs focus more on grooming programs, mentorship and industry exposure. Also the placement services are more rigorous with PGDM programs. Hence, PGDM course from a recognised institute is usually good to pursue good salary options.

Yes, one can pursue MBBS after completing B.Sc. Zoology provided you meet the eligibility criteria set by the medical schools, only for that, you can plan to join. I hope it helps.

Here are the courses after B.Sc. Zoology you can look for:
M.Sc Microbiology
M.Sc Medical Technology
M.Sc. Biomedical Technology
M.Sc. Biomedical Engineering.
M.Sc. Medical Biotechnology.
M.Sc. Medical Physiology.

Yes, nothing can stop a Science student from pursuing anything, provided you have a honours as it is generally required for doing Masters, so if you have interest in arts, go for it.

Pursuing a Masters in a relevant field or specializations is a great career choice for B.Sc. Zoology students. Apart from that, candidates can also signup for professional courses like PGDM or MBA to enter the corporate world.

Kindly visit this link for information
https://www.shiksha.com/university/sumandeep-vidyapeeth-vadodara-26375/course-m-sc-in-perfusion-care-technology-304247.

Eligibility Criteria for St. John's Medical College for B.Sc in Cardiac Perfusion Technology is given below:
A candidate should have passed the 2-year Pre-University examination conducted by the Pre-University Education Board in the State of Karnataka or any other examination considered as equivalent, by RGUHS and Score not less than 40% of marks in Physics, Chemistry and Biology.

You can get all the information in the link given below:-
https://www.shiksha.com/science/b-sc-agriculture-chp.