NEET · Biology · STD 11 - 7. Structural organisation in animal

Which of the following statement is correct about location of the male frog copulatory pad?

A First and Second digit of fore limb
B First digit of hind limb
C Second digit of fore limb
D First digit of the fore limb

Verified Solution

Answer & Solution

Correct Answer

(D) First digit of the fore limb

Step-by-step Solution

Detailed explanation

In male frogs, copulatory pad is present on the first digit of the forelimbs which are absent in female frogs.

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.

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Match the items of column \(I\) with column \(II\)

Column \(I\)	Column \(II\)
\((a)\; XX-XO\) method of sex determination	\((i)\) Turner's syndrome
\((b)\; XX-XY\) method of sex determination	\((ii)\) Female heterogametic
\((c)\) Karyotype\(-45 \)	\((iii)\) Grasshopper
\((d)\; ZW-ZZ\) method of sex determination	\((iv)\) Female homogametic

Select the correct option from the following

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List \(I\)	List \(II\)
\(A\). Taenia	\(I\). Nephridia
\(B\). Paramoecium	\(II\). Contractile vacuole
\(C\). Periplaneta	\(III\). Flame cells
\(D\). Pheretima	\(IV\). Urecose gland