Question

Which statement about endotherms and ectotherms is correct?

1. Endotherms are regulators while ectotherms are conformers
2. Endotherms have higher energetic demands compared to ectotherms.
3. Endotherms spend more energy on internal temperature regulation compared to ectotherms.
4. Endothermy is more common among animal phyla than ectothermy.
5. At the cellular level, endotherms cells always produce more ATP and more heat.

Answer 1

The true statement is 3. Endotherms spend more energy on internal temperature regulation compared to ectotherms.

Step-by-step explanation:

Endotherms are organisms that regulate their body temperature internally. They can generate metabolic heat to maintain a relatively constant and elevated body temperature, allowing them to thrive in diverse environments. Thus, these are animals that maintain a constant body temperature in the face of environmental changes, while ectotherms have body temperatures that vary with the environment.

The correct statement about endotherms and ectotherms is that endotherms spend more energy on internal temperature regulation compared to ectotherms. Therefore, this means that endotherms naturally make use of metabolically generated heat to regulate their overall body temperature within a wider range. On the other hand, ectotherms rely on external thermal energy to help regulate and maintain their body temperatures.

Answer 2

3. Endotherms spend more energy on internal temperature regulation compared to ectotherms.

Step-by-step explanation:

Ectotherms, are considered as cold-blooded animals (reptiles and amphibians), and are organisms that don't have the ability to generate enough heat to keep themselves warm. Endotherms, in contrast, do possess the ability to generate their own body heat.

Endotherms also called warm blooded animals (mammals) have the ability to regulate their body temperature by themselves. If the endotherms are in a cold place their body increases the metabolism and generates more heat. This will compensate for the cold outside.