Recall of different taxonomic systems (three domain or five kingdom) is not required
AQA does not ask you to memorise different classification systems. You only need to know the single hierarchy taught in this subtopic.
Real World
In 2015, AQA examiners confirmed that questions on Woese's three-domain system or Whittaker's five-kingdom system would not appear, freeing students to focus on applying the eight-rank hierarchy instead.
Exam Focus
Do not waste time memorising domains Bacteria, Archaea and Eukarya — marks are only awarded for the eight-level hierarchy.
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