Final answer:
The cuticle of a free-living, terrestrial nematode provides protection and support rather than increasing the surface area for digestion. The cuticle restricts growth, necessitating periodic molting for the nematode to grow.
Step-by-step explanation:
The statement that the selective advantage of a cuticle for a free-living, terrestrial nematode is that it increases surface area for digestion is False. The primary function of the cuticle is to provide protection and support, not to increase surface area for digestion. The nematode cuticle, composed of chitin and collagen, forms a protective armor over the epidermis. It extends into the pharynx and rectum, indicating its protective role in these regions as well. Nematodes possess a complete digestive system separately, with a cylindrical body structure efficient for digestion and nutrient absorption.
However, the cuticle does restrict growth, leading to the necessity for the organism to shed and replace it as it grows larger. Therefore, the advantage of the cuticle is related to protection from the external environment and to accommodate the growth of the organism.