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Insects show a distinct division into head, thorax and abdomen. In crustaceans and myriapods head and thorax are fused. In arachnids body is divided into prothorax, mesothorax and metathorax.

1. a) True for all
2. b) True for Insects only
3. c) True for Crustaceans and Myriapods only
4. d) True for Arachnids only

Correct answer: b) True for Insects only

Solution

Insects are characterized by three distinct body regions: head, thorax, and abdomen. The other groups listed do not fit the statements given, so the claim is true only for insects.

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