Which feature is best for a dichotomous key?

  1. Colour of a leaf in autumn
  2. Where it was found
  3. Number of legs
  4. Size of the animal
Answer

C) Number of legs

Choose fixed, visible features. O Level Biology · Topic 2 Classification · 2.1 Concept and use of a classification system

Biology MCQ · More O Level Biology: Classification MCQs · Practise