Which Chordate Trait Evolved First

question 37

Multiple Choice

Which chordate trait evolved first?

• A)Calcium-hardened skeleton
• B)Amniotic egg
• C)Four limbs
• D)Skull and backbone

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Definitions:

Voidable Contract

A legal agreement that may be considered invalid upon the request of one of the parties due to certain defects, such as misrepresentation or lack of capacity at the time of execution.

Statute Of Limitations

A statute that requires that certain classes of lawsuits must be brought within defined limits of time after the right to begin them accrued or the right to bring the lawsuit is lost.

Unenforceable Contract

An agreement that, due to legal deficiencies or circumstances, cannot be legally compelled by a court to be executed by the parties involved.

Executory Contract

A contract under which both parties to the agreement have obligations that remain to be fulfilled; if one side has completed its obligations, the contract is no longer executory.