Lungs First Evolved in Which Group

question 59

Multiple Choice

Lungs first evolved in which group?

• A) Cartilaginous fishes
• B) Bony fishes
• C) Lampreys
• D) Coelacanths
• E) Lungfishes

---

Definitions:

Opposite Number

The number that, when added to a given number, results in zero; also known as the additive inverse.

Real Number Line

A line that graphically represents the set of all real numbers in a continuous manner, where each point on the line corresponds to a real number.

Integers

Whole numbers that include positive numbers, negative numbers, and zero, but not fractions or decimals.

Real Number Line

A line that depicts all possible real numbers in a ordered, one-dimensional continuum, with every point on the line corresponding to a real number.