During Chordate Evolution, What Is the Sequence (From Earliest to Most

question 60

Multiple Choice

During chordate evolution, what is the sequence (from earliest to most recent) in which the following structures arose?
1) amniotic egg
2) paired fins
3) jaws
4) swim bladder
5) four-chambered heart

• A) 2, 3, 4, 1, 5
• B) 3, 2, 4, 1, 5
• C) 3, 2, 1, 4, 5
• D) 2, 1, 4, 3, 5
• E) 2, 4, 3, 1, 5

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Definitions:

Social Referencing

Understanding an ambiguous situation by seeking another person’s perception of it.

Stranger Anxiety

A developmental situation where infants begin to exhibit distress or wariness in the presence of unfamiliar people.

Mutual-regulation Model

A theory suggesting that individuals in relationships manage and adjust their emotions and behaviors in response to each other.

Erikson

Refers to Erik Erikson, a developmental psychologist known for his theory on the psychosocial stages of human development.