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Question

In Arthropoda, head and thorax are often fused to form a cephalothorax, which of the following classes is characterised by division into three major segments head, thorax and abdomen?

A
Crustacea
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B
Arachnida and Crustachea
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C
Insecta
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D
Myriapoda
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Solution

The correct option is C Insecta
In Arthropod animals the body consists of a head, thorax and abdomen. In Insects, head and thorax remain separate and are not fused together into Cephalothorax. These are characterised by an exoskeleton and joint appendages. Arthropoda is the phylum which contains a diverse group of organism. So, the correct answer is option C.

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