binomial nomenclature – a way of naming every group of organisms using the genus and species into which they are classified

Question

dichotomous key – a tool used to identify unknown organisms through a series of choices between two possible characteristics
taxonomy – the science of classifying living things based on their shared characteristics

● Classifying organisms (taxonomy) is categorizing them based on shared characteristics.
○ With dichotomous key, each characteristics is given a 2-word name, such as Erinaceus europaeus (European hedgehog) or Felis catus (house ____). These are also called scientific names.
○ To binomial nomenclature organisms, people can use a dichotomous key.
■ Based on shared characteristics
■ Several steps, each with ___ choices of specific traits
■ Go to steps as directed
■ Each ________ will be identified eventually with its scientific name (_______________)
■ Identify each organism:

Answer 1

1. Start with the first step of the dichotomous key, choosing between two characteristics.
2. Follow the directions to the next step based on your choice.
3. Continue through the steps until you reach the end and identify the organism.
4. Use the scientific name (binomial nomenclature) to identify the organism, consisting of the genus and species names.