There are various third party websites that have pdf of previous question papers with answers for ts cpget-M.sc in botany.I also recommend you to search for the papers and their answers on youtube as many channels post videos solving the paper that can be helpful to clear your doubts if any.If you want to practice mock or sample papers you can visit the below link and easily download free pdfs of the subject you want-

ts cpget-M.sc in botany