Dichotomous Key Explanation For Kids
The phrase dichotomous key might not be instantly familiar, but we're betting as a parent, you've seen them before.
A dichotomous key is an important tool used by biologists to identify a given species or organism, and crop up in the GCSE biology syllabus. Dichotomous keys look like flow charts, and feature a series of images and text with two choices branching off at each step: you choose the one that fits the organism you want to identify.
At each stage, you're presented with a choice of characteristics, and answer 'yes' or 'no', until you make an identification of an organism, or species.
The word 'dichotomous' means two; they're sometimes also called a 'branching tree'. A dichotomous key is used to order information, and as a classification key, plus they're a tool for teaching younger nature-lovers about similar species.
When out exploring nature in a field, take a dichotomous key, to identify and learn characteristics of any organisms you discover.