Question

There are amphibians that are even larger than bullfrogs. Which of the following could explain how such a large amphibium could obtain a sufficient rate of diffusion of respiratory gases?a. living in an environment of lower oxygen concentrationb. reduced metabolic rate (reduced rate of cellular respiration)c. dry skind. different shape (e.g. flat or ribbon shaped)e. larger internal surface area of the lungs

Answer 1

Answer:

The correct answer are option d. "different shape (e.g. flat or ribbon shaped)" and option e. "larger internal surface area of the lungs".

Explanation:

The rate of diffusion of respiratory gases is one of the things that limits the size of organisms. One example is the respiratory system of the insects, which does not allow them to growth too much in size. However, some species of amphibians have adapted to overcome this limitation, with traits such as having a peculiar shape and having a large internal surface area of the lungs. For instance, giant salamanders are flat shaped and have a single lung which has a large internal surface area.