Chapter 30, Problem 6STP

Summary Introduction

Introduction:

The spiders are the organism belonging to the class arthropods. The arthropods are named so because they have 8 joint appendages, but the number of joint appendages actually may vary from species to species.

Answer to Problem 6STP

Correct answer:

Option (B).

Explanation of Solution

Explanation/justification for the correct answer:

Option (B) 4. The spiders have 8 legs in total, which means they have a total of 4 pairs of joint appendages. Hence, the correct answer is option (B).

Explanation for incorrect answer:

Option (A) 3. Three pairs of joint appendages represent 6 legs. Hence, it is an incorrect answer.

Option (C) 5. Five pairs of joint appendages represent 10 legs. Hence, it is an incorrect answer.

Option (D) 6. 6 pair of joint appendages mean 12 legs. Hence, it is an incorrect answer.