Which one of the following are analogous structures?

A Wings of bat and wings of pigeon
B Gills of prawn and lungs of man
C Thorns of Bougainvillea and tendrils ofCucurbita
D Both \((a)\) and \((b)\)

Verified Solution

Answer & Solution

Correct Answer

(D) Both \((a)\) and \((b)\)

Step-by-step Solution

Detailed explanation

(d) : The organs which have similar functions but are different in their structural details and origin are called analogous organs. The wings of bat are analogous to wings of pigeon. It is due to the fact that the basic structure of the wings of the mammal is different from the wings of bird. However, their function is similar. Similarly, gills of prawn and lungs of man, both are respiratory organs yet they have very different basic structure.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match List \(I\) with List \(II\) :

List \(I\)	List \(II\)
\(A.\) Expiratory capacity	\(-\) Expiratory reserve volume \(+\) Tidal volume \(+\) Inspiratory reserve volume
\(B.\) Functional residual capacity	\(-\) Tidal volume \(+\) Expiratory reserve volume
\(C.\) Vital capacity	\(-\) Tidal volume \(+\) Inspiratory reserve volume
\(D.\) Inspiratory capacity	\(-\) Expiratory reserve volume \(+\) Residual volume

Choose the correct answer from the options given below :

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