Should Basmalah be said in all Rak`ahs or only the first?

Q 1: Regarding Basmalah (saying, "Bismillah Al-Rahman, Al-Rahim [In the Name of Allah, the Most Gracious, the Most Merciful]"), is it repeated in every Rak`ah (unit of Prayer), or said in the first one only?

A: Saying Basmalah is legally required in every Rak`ah before reciting Al-Fatihah as well as before every Surah, except for Surah Al-Tawbah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.