In arthropods, head and thorax are often fused to form a cephalothorax, but in which one of the following classes, is the body divided into head, thorax, and abdomen?
A
Insecta
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B
Myriapoda
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C
Crustacea
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D
Arachnida and Crustacea
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Solution
The correct option is A Insecta The insect, though being an arthropod, has three basic parts like the head, the thorax, and the abdomen. The head is where the main receptor parts are located. The thorax or the mid-section typically holds the wings usually two paired (if an insect can fly), and 3 sets of legs. The abdomen makes up the last part which stores the digestive system, reproductive organs. Therefore, the correct answer is option A.