The Following Numbered Sets of Characters Each Represent a Distinct

question 13

Multiple Choice

The following numbered sets of characters each represent a distinct group of organisms:
1. three toes per foot, feathers, cold-blooded, no finger adaptations
2. three toes per foot, body hair, warm-blooded, opposable thumbs
3. three toes per foot, feathers, warm-blooded, no finger adaptations
4. three toes per foot, body hair, warm-blooded, no finger adaptations
Which of the following choices is the most likely to represent the order in which these groups would appear on an evolutionary tree, from oldest to youngest group? (Hint: the more primitive characters are cold-bloodedness, feathers, and no finger adaptations.) "

• A)1, 2, 3, 4
• B)4, 2, 3, 1
• C)1, 3, 4, 2
• D)2, 1, 4, 3

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Definitions:

Teres Major

A muscle of the upper limb that acts on the shoulder joint, assisting in the rotation and adduction of the arm.

Teres Major

The teres major is a muscle located in the upper arm that helps in rotating the arm inward and also assists in drawing the arm toward the body.

Ventral Surface

The front or anterior surface of the body, opposite to the dorsal surface.

Pectoralis Group

A group of muscles located in the chest, responsible for various movements of the shoulder joint, including flexion, adduction, and internal rotation.