Wallahu 'alam..but I do know that there is a concept of replying to the verses of the Qur'an. For example, if a ayat asks a question like the last verse of Surah Tin: "
Is not Allah the most just of judges?", some of the salaf used to reply in affirmation while reciting. Another example is the verse in Surah al-Rahman, "
Then which of the blessings of your Lord will you both deny?", the Jinn replied to this verse "
O Allah! None of Your favors do we deny. All praise is due to You.' and Ibn Abbas r.a. used to say: "
Nay, our Lord!'' meaning, "None of Your favors do we deny.''
The Surah Rahman part is mentioned here:
http://tafsir.com/default.asp?sid=55&tid=51541
I actually remember there being a section in Imam Nawawi's book
Etiquette with the Qur'an (Al-Tibyan fi Adab Hamalat al-Qur'an) on this concept. It's pretty interesting!