Hi.

The eligibility criteria for B.Sc Zoology is as follows:

• The candidates should have completed class 12th from a recognized board.
• The candidate must have studied Physics, Chemistry, and Biology in class 12.
• The candidate must fulfill the minimum requirement of 50% aggregate in the 10+2 examinations. There is usually some relaxation for the reserved candidates, depending on the institute.

Some of the best institutes for pursue B.Sc in Zoology in Delhi are:

• Shri Ram Group Of Colleges - [SRGC], Muzaffarnagar
• Monad University, Hapur
• Gurukul Institute Of Management And Technology - [GIMT], New Delhi
• Vinayaka Institution Of Management And Technology - [VIMT], New Delhi
• Rishihood University, Sonepat

You can also get a more comprehensive list along with fee structure, reviews, cutoff, admission procedure, exams accepted etc. on this page

I hope this helps.

Good Luck