Hi, Thanks for your help. I eventually found that if I pulled down the task bar at the top with the USB port PLUGGED IN it gave me the option to transfer photos and files.
It's great. Actually, transferring photos to pc is not difficult. We can do that in MTP mode. And the easy way to transfer photos to pc from phone is using Android Assistant tool. With its help, we can easily transfer app, contacts, sms, music, photos, videos, books, call logs to pc.