Zoology

Hello Bhawana,
First and foremost, do not worry. Almost all the entrance exams are quite simple in nature and easy to clear. As you are desirous of appearing for entrance for M.Sc, the syllabus will be of B.Sc, which you have already studied and passed. You are aware of your strengths and weaknesses. Just brush up on strong topics and study in detail on weak topics. Try to appear for and give mock tests, if possible. However, have a timetable to study all the topics covered in the syllabus. I am sure you will pass with flying colours.

A few good colleges offering M.Sc. Zoology are:
1) Ramjas College, Delhi
2 )HansRaj College, Delhi
3) Christ University, Bengaluru
4) Loyola College, Chennai
5) Miranda House, Delhi
Kindly check individual college's website for their entrance exam procedure.

M.Sc Agriculture: Eligibility
The candidate should have a Bachelor's degree in Agriculture or Horticulture or Forestry from a recognized university in India. The candidate must also have passed the degree with minimum 50% marks.

Here is the youtube link- https://www.youtube.com/watch?v=VoM_ySnG1jE
http://www.unipune.ac.in/university_files/pdf/old_papers/oct2010/Science/MSc_Zoology.pdf.

The best college would be any of the DU (Delhi University) colleges, like Hansraj, Ramjas, Miranda, Zakir Husain Delhi College, SVC (Sri Venkateswara College) etc. After DU, I can suggest you to study M.Sc. In Wildlife Sciences from Amity University NOIDA or M.Sc. Zoology from MDU - Maharshi Dayanand University.

According to me, the scope in this field is a bit limited. Rest depends on your caliber and confidence.
You may check the answer to a sort of same question, which was posted by another Expert sometime back-
https://ask.shiksha.com/what-is-wildlife-biology-what-is-the-scope-in-m-sc-in-wildlife-biology-qna-4245622

You have many options like M.Sc. in medical technology, M.Sc. In Medical biotechnology, M.Sc. In botany, M.Sc. In Zoology, M.Sc. In chemistry, M.Sc. In cardiac perfusion technology, M.Sc. In Health care Science, M.Sc. Biochemistry, M.Sc. In Biotechnology, M.Sc. In laboratory technology, M.Sc. In medical biotechnology, M.Sc. In medical physiology, etc.

Please visit the below link :
https://www.shiksha.com/science/colleges/m-sc-zoology-colleges-Kolkata.