Karnataka PGCET

With a PGCET MBA rank of around 5000 under the OBC-NCL category, plus having the NCC quota, you stand a good chance of getting admission into reputed colleges. Based on previous year cutoffs, colleges like Acharya Institute of Technology, Dayananda Sagar University, RNS Institute of Technology, NMAM Institute of Technology, IFIM Institutions, BN Bahadur Institute of Management, and Christ Academy are all possible options. Since OBC seats usually go higher and NCC quota adds weightage, you should actively participate in all counselling rounds for better chances.

Yes, you can pursue an MCA after completing B.Sc. (Hons.) Zoology, as confirmed by Shiksha.com:
You must hold a Bachelor's degree in any discipline with at least 50% aggregate marks (45–50% for reserved categories).
Additionally, you must have studied Mathematics at 10+2 level or during your graduation. 
So, if you've studied Math in either class 12 or your undergraduate program, you remain eligible to apply for MCA programs.

Before the first round of counselling starts, KEA conducts a mock allotment round to familiarise candidates with the Karnataka PGCET counselling process, including the release of mock allotment results, and mock round cutoffs.

Candidates will not get admission into Karnataka PGCET participating colleges based on the mock allotment results.

Karnataka PGCET draft seat matrix is released soon after the result declaration. The draft seat matrix indicates the total seats available at Karnataka PGCET participating colleges. These seats are submitted by the PGCET participating institutes to KEA to provide an idea before the counselling process begins.

Karnataka PGCET verification slip is downloadable from the official exam website. Candidates have to login to download the PGCET verification slip. PGCET verification slip is required during the counselling process. Candidates who have the Karnataka PGCET verification slip will be allowed to participate in the option entry process.