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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

Solutions

Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 24, Problem 4SQ
Textbook Problem
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The oldest body fossils of a land animal are of ______.

  1. a. insects
  2. b. roundworms
  3. c. cnidarians
  4. d. myriapods

Summary Introduction

Concept introduction: Myriapods belong to the Phylum Arthropoda. Arthropods are characterized by jointed legs. Myriapods include centipedes and millipedes that are nocturnal invertebrates, which have many segments.

Explanation of Solution

Reasons for correct statement:

Myriapods have existed on earth since 428 million years ago. The fossils of these terrestrial, air-breathing animals have been discovered. The oldest fossil of myriapod that was discovered was 8 feet in length and is known as the largest known arthropod to have existed.

 Option d. is given as “myriapods”

As the oldest fossil found was that of myriapods, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “insects”...

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