Identify and State the Historical Significance of the Following

question 77

Short Answer

Identify and state the historical significance of the following:
-Sigmund Freud

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Definitions:

Radially Symmetrical

An organism is described as radially symmetrical when its body structure can be sliced into symmetrical halves through any number of planes along its center.

Water Vascular System

Unique hydraulic system of echinoderms; functions in locomotion and feeding.

Echinoderms

A phylum of marine animals including starfish, sea urchins, and sea cucumbers, characterized by radial symmetry and a water vascular system.

Digestive System

A collection of organs that breaks down food into nutrients, which the body uses for energy, growth, and cell repair.