Multiple Choice
In the context of evolution and natural selection, which stage is unique to the hemimetabolous lifecycle?
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21. Evolution
Introduction to Evolution and Natural Selection
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Which of the following is an advantage that ectotherms have over endotherms of the same size?
A
Greater ability to survive in cold environments
B
Lower metabolic rate
C
Higher body temperature regulation
D
Faster growth rates
Verified step by step guidance1
Understand the difference between ectotherms and endotherms: Ectotherms rely on external environmental conditions to regulate their body temperature, while endotherms maintain a constant body temperature through internal metabolic processes.
Consider the metabolic rate: Ectotherms generally have a lower metabolic rate compared to endotherms because they do not need to generate heat internally to maintain body temperature.
Analyze the advantages of a lower metabolic rate: A lower metabolic rate means ectotherms require less energy and food to survive, which can be advantageous in environments where resources are limited.
Evaluate the options given: Compare each option to the characteristics of ectotherms. A lower metabolic rate aligns with the known advantage of ectotherms, as it allows them to conserve energy.
Conclude with the correct advantage: Based on the analysis, the advantage that ectotherms have over endotherms of the same size is their lower metabolic rate, which allows them to survive with less energy intake.
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