Hello aspirant!

So if you are preparing for the entrance exam of M.Sc zoology then following are the books recommended to get the best results:

1) Zoology A Complete Guide (M.Sc. Entrance Examination) (1969) by Anita Sehgal Dr (Author)
2) M.Sc. Zoology Entrance Examinationby A Sehgal
3) TRB Zoology (PG) Previous Years Model Solved Papers 2017 by S. Devi Parthiban (Author)

Hope this helps you!

All the best!