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Dichotomous Key

A dichotomous key is a tool that helps identify various items in nature by asking a series of choices that lead to the correct name of the item. This key provides step-by-step instructions to identify objects such as trees, wildflowers, mammals, rocks, and fish. Learn how to use a dichotomous key effectively.

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Dichotomous Key

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  1. Dichotomous Key Using Observable Characteristics to Identify Objects

  2. What is a dichotomous key? • A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. • Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts". Therefore, dichotomous keys always give two choices in each step.

  3. How to use a Dichotomous Key • Dichotomous Key in Action

  4. Use a dichotomous key to identify these individuals. Pick an individual to identify, When you are ready click start. Start

  5. Is the individual male or female? Male Female

  6. Is the individual wearing a hat? Hat No Hat

  7. Is the individual in the military? Military Not Military

  8. Is he wearing a dress uniform or a camouflage uniform? Dress Uniform Camouflage Uniform

  9. Introducing Arnold He is a man wearing a hat and a military dress uniform. Return to Start

  10. Introducing Hector He is a man wearing a hat and a camouflage military uniform. Return to Start

  11. Introducing Greg He is a man wearing a hat, but not wearing a military uniform. Return to Start

  12. Does the individual have facial hair or is he clean shaven? Facial Hair Clean Shaven

  13. Is the individual wearing black? Wearing Black Not Wearing Black

  14. What is the individual wearing? Suit Jeans

  15. Introducing Reggie He is a man with facial hair, wearing a black suit, but not wearing a hat. Return to Start

  16. Introducing Hugo He is a man with facial hair, wearing a black shirt and jeans, but not wearing a hat. Return to Start

  17. Introducing Bill He is a man with facial hair who is not wearing black or a hat. Return to Start

  18. What is the individual wearing? Shorts Pants

  19. Introducing Jack He is a clean shaven man who is wearing shorts, but not black or a hat. Return to Start

  20. Introducing Kurt He is a clean shaven man who is wearing pants, but not black or a hat. Return to Start

  21. Is the individual wearing a hat? Hat No Hat

  22. Is the individual wearing purple? Wearing Purple Not Wearing Purple

  23. What is the individual wearing Green Boa and Hat Red Boa and Hat

  24. Introducing Doris She is wearing a purple dress and green boa and hat. Return to Start

  25. Does the individual have a purse? Purse No Purse

  26. Introducing Erin She is wearing a purple dress and red purse, boa, and hat. Return to Start

  27. Introducing Rhonda She is wearing a purple dress and red boa and hat. Return to Start

  28. Introducing Gail She is wearing a hat, but not wearing purple. Return to Start

  29. What is the individual wearing? Pants Skirt

  30. Introducing Jenny She is wearing pants, but not a hat. Return to Start

  31. What color boots is the individual wearing? Red Black

  32. Introducing Mary She is wearing a skirt and red boots, but not a hat. Return to Start

  33. Introducing Beth She is wearing a skirt and black boots, but not a hat. Return to Start

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