B.Sc Zoology

Yes, you can get into DU for your preferred course through entrance exam. I am not familiar with the cutoffs for entrance exam. So, I would recommend you to check the official website of Delhi University and the view it yourself according to your convenience. The link for the official website of DU : http://www.du.ac.in/du/.

Yes, you can apply but you must have mathematics as a subject in your 10+2 course.
Thank you.

Zoology cutoff of Hindu college reaches 94% for general and not less than 83% for SC/ST. So, it is not possible to get Zoology with 54.33% marks.

AKI's Poona College of Arts, Science and Commerce, Anantrao Pawar College, Annasaheb Awate Arts, Commerce and Hutatma Babu Genu Science College, Baburaoji Gholap College.

Before choosing a subject, first you should decide in which field you want to make career I. e. zoology or HR. Accordingly you should select the subject. The subject selection should be based on your career goals and interest. You can choose zoology or HR and Personal Management.

Please check for your eligibility to pursue a course in M. F. Sc from the criteria mentioned below:
Master of Fisheries Science (M.F.Sc.): Eligibility:
The candidates who have completed their higher education that is Graduation with Science as their major discipline with at last minimum aggregate marks obtained in their exams are eligible for this course. Some institutions consider the score in the entrance tests based on the subjects covered and may consider that scores also.
Regards.

Yes, you are eligible for PU-CET (UG). The common entrance test is for various courses and different department have a different cut-off.