SAT Subject Biology Practice Question 286: Answer and Explanation

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Question: 286

16. Arthropods can be characterized by all of the following EXCEPT

A. a hard exoskeleton
B. a water vascular system
C. jointed appendages
D. molting
E. segmented body

Correct Answer: B

Explanation:

B Choices A, C, D, and E all describe characteristics of the phylum arthropoda. A water vascular system is a characteristic of the phylum echinodermata, the "spiny skinned" animals such as sea stars and sea urchins. Their water vascular system ends in tube feet that play a role in locomotion and feeding. Don't forget your LEAST/EXCEPT/NOT technique of circling the word "EXCEPT" and drawing a vertical line through the answer choices to help you remember to choose the incorrect statement.

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