Final answer:
The statement is false; igeneous extrusive rocks are not called plutons but are referred to as volcanic rocks, contrasting with the coarsely grained plutonic, or intrusive, igneous rocks.
Step-by-step explanation:
The statement that igneous extrusive rock bodies are called plutons is False. Plutons refer to intrusive igneous rock bodies that cool slowly beneath the Earth's surface, resulting in coarsely grained textures. These rocks include granites and are characterized by their large, easily distinguishable crystals.
Conversely, extrusive igneous rocks, also known as volcanic rocks, form from lava that cools rapidly on the Earth's surface, leading to fine-grained textures or a lack of crystal growth altogether, making them different from plutons.