SAT Subject Biology Practice Question 44: Answer and Explanation

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Question: 44

3. Which of these features are found in the phylum that includes centipedes?

I. Ventral nerve cord

II. Segmented body

III. Calcium- rich shell

IV. Jointed limbs

A. I and II
B. I and IV
C. II and III
D. I, II, and IV
E. II, III, and IV

Correct Answer: D


Centipedes belong to the phylum Arthropoda. Arthropods feature a ventral nerve cord, segmented body plan, jointed appendages, and possibly an exoskeleton of chitin. Mollusks (such as snails) secrete a calcium-rich shell.

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