Hello.

There are a number of colleges across Kolkata that provide B.Sc in Zoology. These include colleges such as Loreto, Scottish Church, Presidency University, etc.

However since you got 68.2% I suggest that you apply to the following colleges:

1. City College
2. Bangabashi College
3. Bidhannagar College
4. Surendranath College

If you don't want direct admission through your Boards marks, you can also sit for entrance exams provided by various colleges such as Presidency University.

Hope this helps.