The First Vertebrates to Evolve Lacked Jaws and Had Skeletons

question 27

Multiple Choice

The first vertebrates to evolve lacked jaws and had skeletons made from a strong flexible tissue called cartilage.The lamprey is a modern example of this ancient group of vertebrates known as

• A)amphibians.
• B)reptiles.
• C)bony fishes.
• D)jawless fishes.

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Definitions:

Sexual Dysfunction

Refers to a problem that prevents an individual from experiencing satisfaction from sexual activity, which can affect any phase of the sexual response cycle.

Sexual Relations

Physical or romantic activities and interactions between two or more individuals.

Female Sexual Interest/Arousal Disorder

A sexual dysfunction characterized by a lack of sexual interest or arousal in women, significantly impacting their well-being or relationships.

Labial Swelling

Inflammation or enlargement of the labia, which can result from various conditions, including infections, allergic reactions, or physical trauma.