Hey lavkesh,
So according to your question, and is IGNTU offers BSc in zoology botany and chemistry.

It offers a wide variety of UG, PG, and Ph.D. leading to BA, B.Sc., B.Com, BJMC, BBA, BCA, B.Pharm, B.Voc, B.Ed., Integrated B.Ed., MA, MBA, MCA, M.Com, M.Sc., MJMC, Ph.D. and D.Pharm programs.

Minimum eligibility criteria for UG courses is, you should be qualified or passed in 10+2 examination in relevant stream with minimum 50% marks.

The Admission shall be given on the basis of Entrance Test which will be conducted by the university.

*optional
In the case of two or more candidates secure equal marks in the Entrance Test then the admission will be given in order of preference as :

The one who secured highest marks in the qualifying examination

The one who obtained the highest marks in the relevant subject in which he/she is seeking admission

The one who obtained the highest marks in previous examinations or the board examination

And lastly the age I.e. the older one get selected


I hope you have got your answer. If any more help needed feel free to ask.
Best of luck
Thank you

hii lavkesh

yeah!! i would like to say the IGNTU offers the BSc in chemistry, Zoology and Botany as well

for more info you can check the below link for the department of the faculty 

http://www.igntu.ac.in/department.aspx

regards