Question

Heart beats faster in small organisms compared to the larger ones.

• A. True
• B. False
• C. Heart rate is independent of the size of the organisms.
• D. Heart rate is independent of the surface area of the organisms.

Answer 1

The correct option is A

True

Smaller organisms have higher ratio of surface area to volume. So, they lose body heat rapidly and have to generate more heat fast to maintain their body temperature. So, their hearts beat faster to redistribute body heat to maintain the homeostasis.