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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 11SQ
Textbook Problem
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A barnacle is a shelled _______.

  1. a. arthropod
  2. b. gastropod
  3. c. cephalopod
  4. d. crustacean

Summary Introduction

Concept introduction: Crustaceans are marine arthropods. The arthropods are the largest phyla that are characterized by jointed appendages and the exoskeleton made of chitin. Barnacles are arthropods and are closely related to crabs and lobsters. They live in shallow waters and tidal zones.

Explanation of Solution

Reasons for correct statement:

Barnacles are shelled arthropods that are found on ship hulls. The barnacles are shelled crustaceans that are exclusively marine animals. They are sessile animals that attach to hard substratum. They are found attached to the other sea animals as well.

Option d. is given as “crustacean”

As barnacles are crustaceans with shell classified under arthropods, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “arthropod”.

Barnacles are crustaceans. Crustaceans are arthropods. Therefore, barnacle is an arthropod but the most apt description would be crustacean. Therefore, option a...

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