Question Detail
Question
The slides state that circulation is a necessity for large animals because of their:
Correct Answer
Option B is the correct answer.
Detailed Explanation
Circulation is a necessity for large animals because of their high metabolic rates. Large animals have high oxygen and nutrient demands that cannot be met by diffusion alone, requiring a circulatory system for rapid mass transport.
Hint
Think about the relationship between body size, metabolic demand, and transport requirements.