Researchers Measure Animals' Oxygen Consumption (VO₂)as a Way to Quantify

question 13

Multiple Choice

Researchers measure animals' oxygen consumption (VO₂) as a way to quantify metabolic rate.A researcher measured the VO₂ for two animals,A and B,as function of ambient temperature and collected the data shown in the figure.One of the animals was an ectotherm,and one was an endotherm.Based on these data,which animal was the endotherm,and why?

• A)Animal A is the endotherm because at colder temperatures endotherms need to warm themselves through their own metabolic activity.
• B)Animal A is the endotherm because endotherms do not need to regulate their own body temperature by changing metabolic activity.
• C)Animal B is the endotherm because at colder temperatures endotherms need to warm themselves through their own metabolic activity.
• D)Animal B is the endotherm because endotherms do not need to regulate their own body temperature by changing metabolic activity.

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Definitions:

Earth's Concentric Zones

Refers to the internal layers of the Earth, which include the crust, mantle, outer core, and inner core, arranged from surface to center.

Mantle

The thick layer of rock between the Earth's crust and core, playing a key role in tectonic movement and heat transfer.

Core

The innermost layer of the Earth, composed of an iron-nickel alloy and divided into a solid inner core and a liquid outer core.

Lithosphere

The rigid outer layer of the Earth, consisting of the crust and the upper mantle.