Which of the Following Could Be Considered the Most Recent

question 11

Multiple Choice

Which of the following could be considered the most recent common ancestor of living tetrapods?

• A)a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates
• B)an armored, jawed placoderm that had two sets of paired appendages
• C)an early ray-finned fish that developed bony skeletal supports in its paired fins
• D)a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes
• E)an early terrestrial caecilian whose legless condition had evolved secondarily

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Definitions:

Climbing Behavior

Can refer to the literal climbing activities of animals and humans or metaphorically to the behaviors used by individuals to "climb" socially or professionally.

Fear of Heights

An anxiety disorder characterized by an irrational and excessive fear of heights, known clinically as acrophobia.

Flooding

A psychological treatment method where an individual is exposed to their phobia or stressor in full intensity from the start, to help them overcome their anxiety or fear.

Abuse Their Children

The act of causing physical, emotional, or psychological harm to one’s own offspring through neglect or intentional maltreatment.