Fault the broken key rules

Exercise and reference answers

Questions

1. Question

   Three of these would break a dichotomous key.

   Choices

   1. Item

      Two contrasting choices per step

      Correct

      Yes

   2. Explanation

      dichotomous means exactly two

      Item

      Three branches at every step

   3. Explanation

      steps must use observable features

      Item

      Choices based on the observer's mood

   4. Explanation

      that removes the stepwise narrowing

      Item

      One step listing all species

Instructions

Three of these would break a dichotomous key. Fault each one.