Resolution:
Yes, multiple Request Response Invocation or Publication Services can be configured under single Tuxedo Adapter instance. When invoking any of these from Tuxedo end, the request is routed to the specific service based on the 'Event Name' parameter of the callClient function.

The format of the callclient() method is as follows:
  int callClient(char * serviceName,
                 char * sendbuf,
             unsigned long adapterTimeout,
             char * service,
         char * network,
         char * daemon,
         unsigned long agentTimeout,
         char * subject,
             void** replyBuf);