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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Compared to other primates, humans have a(n) _____ capacity for sweating and ___ body hair.

  1. a. increased/increased
  2. b. increased/decreased
  3. c. decreased/increased
  4. d. decreased/decreased

Summary Introduction

Introduction: Sweating is the main mechanism of cooling in large-hoofed mammals and in primates including humans. Sweat glands are exocrine glands that release water and solutes through a pore at the skin’s surface. Evaporation of the water in sweat cools the skin.

Explanation

Reasons for the correct statement:

Humans have a denser array of sweat glands than other primates. A thick coat of hair slows evaporative cooling and insulates the body, thus reducing the heat lost by convection. Humans have sparse body hair relative to other primates that help in more sweating.

Hence, option b. is correct.

Reasons for the incorrect statement:

Option a. is given as “increased/increased”. But, humans have increased capacity for body sweating and decreased body hair.

So, option a...

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