Which Adaptation Was First Found in Reptiles and Was Necessary

question 135

Multiple Choice

Which adaptation was first found in reptiles and was necessary for their complete shift from water to land?

• A) A hard-shelled (amniote)egg
• B) Parental care
• C) Hair
• D) The ability to breathe and run simultaneously
• E) Cephalization

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Definitions:

Acetylene

A hydrocarbon and the simplest alkyne, with the formula C2H2, used as a fuel and a chemical building block.

Ethyne

A colorless hydrocarbon gas with the formula C2H2, known for its use in welding as acetylene.

Molecular Shape

The three-dimensional configuration of atoms within a molecule, determining many of the properties of the molecule, including reactivity and biological activity.

Phosphine

A toxic, flammable gas composed of phosphorus and hydrogen, used as an insecticide and in various industrial processes.