With refrence to the scorpion which one of the following statement is correct:
1.the body consists of head, thorax and abdomen
2.they display mosaic and steroscopic vision
3.they have book lungs which corresponds to the gills of prawn
4.all of the above
Now my question is
Why the first option is not correct as answer told by my teacher is 3 option

The first option is not correct because body of scorpion is divided into only two parts i.e the head and abdomen.

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