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Question

Which one of the following statements is correct regarding cockroach?

A
Head is oval in shape
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B
There are 10 pairs of spiracles (2 pairs of thorax and 8 pairs on abdomen)
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C
Heat is differentiated into funnel shaped chambers with setae on either side
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D
Each eye consists of about 1000 hexagonal ommatidia
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Solution

The correct option is A There are 10 pairs of spiracles (2 pairs of thorax and 8 pairs on abdomen)
In cockroach, head is triangular in shape. heart is differentiated into funnel shaped chambers with ostia on either side. Each eye consists of about 2000 hexagonal ommatidia.

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