Chapter 26, Problem 15A

Summary Introduction

Introduction :

Arthropods are grouped into classes based on common characteristics, such as body segment form, appendages and mouthparts. The naming of arthropods is still questioned by taxonomists. Arthropods have joint-appended exoskeletons that allow them to move in diverse ways.

Answer to Problem 15A

Correct answer :

The correct answer is option (A) 1

Explanation of Solution

Explanation/justification for the correct answer :

Option (A) 1. Aquatic crustaceans are lobsters. The chelipeds have large claws which are designed to capture and crush prey. So, the correct answer is option (A).

Explanation for incorrect answer :

Option (B) 2. The antennae are attached to the first one or two arthropod head segments. So, this is an incorrect answer.

Option (C) 3. The arthropods use walking legs to walk. So, this is an incorrect answer.

Option (D) 4. Beside the next four pairs of walking legs are the swimmerets which are used while swimming as flippers and for reproduction. So, this is an incorrect answer.