Of All of the Chordate Groups, Why Are There Only

question 27

Multiple Choice

Of all of the chordate groups, why are there only two amniote groups (reptilia and mammalia) ?

• A) Amniotes are the only chordate group that has successfully survived the transition to land.
• B) The other craniate groups had brains that were not developed enough to allow the organisms to develop tool-building survival skills.
• C) The vertebral columns of the other vertebrates were not strong enough to survive the transition to land.
• D) The other jawed vertebrates were not able to obtain enough food to survive the transition to land.

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Definitions:

Substitution Effect

The change in consumption patterns due to a change in the relative prices of goods, leading consumers to substitute one good for another more or less expensive one.

Income Effect

Income effect describes the change in an individual's or economy's consumption patterns due to a change in real income.

Opportunity Cost

The cost of foregone alternatives, the value of the best alternative given up when a decision is made.

Wage Increases

Adjustments made to the salary of employees, typically to account for inflation, performance, or changes in the cost of living.