Section 44ad of income tax act

Dear All,

I need your help with regards to following few questions related to Section 44AD of IT Act.

1. Whether the assesse can open a bank account if it is adopting Section 44AD?
2. Is opening of bank accounts can be treated as maintaing books of accounts under this section?
3. If s/he opens the bank account can the assessee deposit money from the sources of the eligble business?
4. If the assessee deposits in the bank account from the eligible business can that be treated as  a parameter for maintenance of books of accounts and disqulaifies from the application of the said section 44AD?
5. If the assessee is maintaing books of accounts under Rule 6 of TN Vat Act 2007, whether that can be considered under this section as maintaing books of accounts, complying to the said Section 44AD?

Kindly post all your valuable support........