Dear Poornima
With many HR questions, I find it useful to look at some underlying factors and often the answer becomes evident.
A good R&S team have a specialised skill set (at least they should have!!) to be able to determine and select the right people for the right job. Not everyone can be a good recruiter.
Successful induction requires a different set of skills - structured, logical, able to present, able to engage large groups, clear thought patterns, ability to build from the known to the unknown, knowledge of adult learning is helpful etc
So ... just based on the required skills of each department, it becomes apparent that induction does not sit as comfortably with with R&S team as it does with the T&D department.
regards