Hey Mantasha,
You have not mentioned about the college in which you want to take admission and about which you are asking, as it could help us to answer your query easily and clearly.
Still I want to tell you that many of the colleges had started the admission process and application procedure is even ended in some of the colleges.
Kindly mention that particular college name to find more details.
Still, I am here mentioning some eligibility criterias for B.Sc. Zoology that colleges demand for admission, these are :

• Candidate must have passed 12th examinations with Physics, Chemistry and Biology /Biotechnology as compulsory subjects
• Candidate must have scored minimum 55% aggregate marks in the qualifying examination.

All the best!