Rules for receiting a surah during salat

If I look at youtube, an imam may recite a surah X from ayah a to b, or surah Y from ayah c to d during a salat. For example Al Baqarah from ayah 153 - 158, Humazah from ayah 1 - 9, or Ash Shu'ara from ayah 86 - 104, etc. Where do we learn this ? How do we know that we can recite Al Baqarah 153 - 158, and not 157 - 159, or 151 - 155 ? If I look at either the quran.com or quranwbw.com, there is no symbol whatsoever that indicate it.