Which one of the following is the true descri | vedclass

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(B) The correct option is $(B)$.In a cockroach,there are $10$ pairs of spiracles present for respiration.Two pairs are located on the thorax: the firs

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Cockroach - $10$ pairs of spiracles ($2$ pairs on thorax and $8$ pairs on abdomen)

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(B) The correct option is $(B)$.In a cockroach,there are $10$ pairs of spiracles present for respiration.Two pairs are located on the thorax: the first pair (mesothoracic) lies between the pro- and mesothorax,and the second pair (metathoracic) lies between the meso- and metathorax.The remaining $8$ pairs are located on the abdomen.Option $(A)$ is incorrect because in a rat,the right kidney is usually slightly higher or at the same level as the left due to the position of the liver.Option $(C)$ is incorrect because the earthworm's alimentary canal sequence is pharynx,oesophagus,gizzard,stomach,and intestine.Option $(D)$ is incorrect because the frog's body is divisible into only two regions: head and trunk (neck is absent).

Which one of the following is the true description about an animal concerned?

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