A dichotomous key to the classes of Subphylum Vertebrata 1 with fins 1' without fins 2 with jaws 2' without jaws 3 with cartilaginous endoskeleton 3' with bony endoskeleton 4 with hair 2 4 3 Class Agnatha Class Chondricthyes Class Osteichthyes Class Mammalia 4' without hair 5 with feathers 5' without feathers 6 with scales Class Aves Class Reptilia Class Amphibia 6' without scales

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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If you have your unknown specimen, you need to choose the character
between 1 and 1’. This means the other character in the pair, gets rejected. At the end of each choice, there is a number. Follow that and it will lead you to the next set of characters and so on. Eventually, by the process of elimination, the identity of the organism being keyed will be determined.

A dichotomous key to the classes of Subphylum Vertebrata
1 with fins
1' without fins
2 with jaws
2' without jaws
3 with cartilaginous endoskeleton
3' with bony endoskeleton
4 with hair
2
4
3
Class Agnatha
Class Chondricthyes
Class Osteichthyes
Class Mammalia
4' without hair
5 with feathers
5' without feathers
6 with scales
Class Aves
Class Reptilia
Class Amphibia
6' without scales
Transcribed Image Text:A dichotomous key to the classes of Subphylum Vertebrata 1 with fins 1' without fins 2 with jaws 2' without jaws 3 with cartilaginous endoskeleton 3' with bony endoskeleton 4 with hair 2 4 3 Class Agnatha Class Chondricthyes Class Osteichthyes Class Mammalia 4' without hair 5 with feathers 5' without feathers 6 with scales Class Aves Class Reptilia Class Amphibia 6' without scales
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