Question Detail

ZOO 101 Gas Exchange and Respiration in Mammals Objective Question

Question

What is the fundamental challenge that large mammals face regarding gas exchange?
Options
A They have too many cells that consume oxygen
B They have a low surface area to volume ratio
Correct Answer
C They require more energy than tiny organisms
D Their cells are too far from the circulatory system
Correct Answer

Option B is the correct answer.

Detailed Explanation

Large mammals have a low surface area to volume ratio, meaning their cells are deep within the body and far from the outside air, necessitating a specialized internal gas exchange system.

Hint

Think about the size difference between a flatworm and a human.

Question Info