Book lungs are the respiratory organs in:

Question

Match the LIST-I (Body Movements) with LIST-II (Description):
\[ \begin{array}{|l|l|} \hline \textbf{LIST I (Body Movements)} & \textbf{LIST II (Description)} \\ \hline A. \ \text{Flexion} & I. \ \text{Moving a limb away from the mid-line, or median plane of the body} \\ B. \ \text{Extension} & II. \ \text{Movement of a limb towards the body midline} \\ C. \ \text{Abduction} & III. \ \text{Movement that decreases the angle of joint and brings two bones close together} \\ D. \ \text{Adduction} & IV. \ \text{Movement that increases the angle or distance between two bones of the body} \\ \hline \end{array} \] Choose the correct answer from the options given below:

Answer 1

Step 1: Mollusca use gills or mantle-lungs, and earthworms respire through their skin, none using book lungs.
Step 2: Silverfish, like other insects, use a tracheal air-tube system.
Step 3: Arachnids uniquely possess stacked-lamellae book lungs for gas exchange.
Step 4: The correct answer is Arachnida.

Book lungs are the respiratory organs in:

Show Hint

The Correct Option is B

Solution and Explanation

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