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Biology (MindTap Course List)

11th Edition
Eldra Solomon + 3 others
ISBN: 9781337392938

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BuyFindarrow_forward

Biology (MindTap Course List)

11th Edition
Eldra Solomon + 3 others
ISBN: 9781337392938
Textbook Problem

An ectotherm (a) has a higher rate of enzyme activity than a typical endotherm (b) has a variety of homeostatic mechanisms for regulating body temperature (c) depends on sensors in the hypothalamus to regulate temperature (d) may use behavioral strategies to help adjust body temperature (e) must expend more energy on thermoregulation than an endotherm

Summary Introduction

Introduction: Maintenance of internal body temperature in the optimum range is called thermoregulation. Different organisms maintain their body temperatures by adapting different techniques. Energy gain and loss also plays important role in thermoregulation. Some animals bring metabolic changes while others adopt specific behavioral changes for thermoregulation of their body.

Explanation

Reason for the correct answer:

Ectotherms are the organisms that depend on external heat to maintain their body temperature. The rate of metabolic activities greatly depends on the external environmental temperature. Their energy consumption rates are lower than endotherms as there is no energy spent in maintaining the body temperature. To meet this energy consumption and maintaining their body temperature, ectotherms adopt some behavioral strategies.

Option (d) is given as “may use behavioral strategies to help adjust body temperature”.

Many ectotherms take up some behaviors that help them to maintain their body temperature. Hence, the correct answer is option (d).

Reasons for incorrect answers:

Option (a) is given as, “has a higher rate of enzyme activity than a typical endotherm”.

In ectotherms, metabolic activities rate changes with the change in the external environment. The rate of enzymatic and other metabolic activities is lower as they are not needed to maintain the body temperature...

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