Which of These Characteristics Added Most to Vertebrate Success in Relatively

question 59

Multiple Choice

Which of these characteristics added most to vertebrate success in relatively dry environments?

• A) the shelled, amniotic egg
• B) the ability to maintain a constant body temperature
• C) two pairs of appendages
• D) bony scales
• E) a four-chambered heart

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Definitions:

At Rest

A state where an object or individual is not in motion, or is experiencing mental or physical tranquility.

Cell

The basic structural, functional, and biological unit of all living organisms, acting as the building blocks of life.

Myelin Sheath

The white, fatty coating wrapped around some axons that acts as insulation and enables impulses to travel much faster.

Deterioration

refers to the process of becoming progressively worse, as in the condition of an object, structure, or health.