Hello there! 

Greetings! 

If you are asking about pursuing b.sc zoology then minimum eligibility criterion for a student to take admission in B.Sc.Zoology is that the candidate must have studied Physics, Chemistry, and Biology in class 12. The candidate should also have attained a minimum of 50% aggregate in 10+2 examinations. So , if you had biology in your class 12th and your score was at least 40 % marks then you can go for b.sc zoology. 

If you are asking about pursuing m.sc zoology then you are not eligible as for tha candidate must have passed B.sc/B.sc (Hons) Zoology   with  50% marks in aggregate from a recognised university. Candidates who have passed B.sc/ B.A in Medical and Allied Medical Sciences/ Biosciences/ Life sciences with minimum 50% marks in aggregate from a recognised university are also eligible to apply.

Thankyou