Final answer:
The statement about the specialization of starfish arms is false. Starfish have radial symmetry and similar structures in each arm, including a decentralized nervous system and a water vascular system that extends to all arms. The correct option is B. False
Step-by-step explanation:
The statement that each arm of the starfish differs internally, with one specialized for reproduction, another for respiration, a third for digestion, a fourth for the water vascular system, and the fifth for the nervous and circulatory systems, is false.
Starfish, or sea stars, possess a radial symmetry which generally means that each of the arms contains similar structures. In actuality, the water vascular system extends into all the arms enabling locomotion, while the digestive and reproductive systems are not confined to individual arms but are centralized in some species and branched out in others.
The nervous system is also decentralized and extends into each arm, rather than being confined to just one. The correct option is B. False