Which of the following options correctly lists three evolutionary adaptations that help some animals directly exchange matter between the cells of their body and the environment?
A) a gastrovascular cavity, a body with two tissue layers, and a torpedo-like body shape
B) an external respiratory surface, a small body size, and a two-cell-layered body
C) a large body volume, a long, tubular body, and thin covering
D) an unbranched internal surface, a small body size, and thick covering

Question

Quizplus · Accepted Answer

Adaptations such as an external respiratory surface, a small body size, and a two-cell-layered body facilitate direct exchange of matter between an animal's cells and its environment by maximizing surface area relative to volume, minimizing diffusion distances, and simplifying the organism's structure to allow efficient matter exchange.

Which of the Following Options Correctly Lists Three Evolutionary Adaptations