Classification is done by asking a series of yes or no questions. This questioning method is called a dichotomous key. Each question is about physical structures and is based on whatever it is that divides members of that kingdom, phylum, class, order, family or genus. Questions might include: Does it bear its young live or lay an egg? Does it have gills or lungs? Does it have hair, fur, scales or feathers? The dichotomous key helps us to classify organisms in an organized manner.
"Dear King Phillip Come Over For Good Soup" is a mnemonic device that can help you remember the order and names of the different levels of classification. The first letter of each word is the same as the first letter for the different levels of classification—Domain, Kingdom, Phylum, Class, Order, Family, Species.
The dichotomous key
A
helps classify organisms through yes or no questions.
B
unlocks the names of different organisms in a family.
C
groups animals that lay eggs with animals that have live births.
D
asks multiple questions about how organisms behave and act.
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Classification is done by asking a series of yes or no questions. This questioning method is called...
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