NEET · Biology · STD 11 - 4. Animal kingdom

Assertion \((A)\):All vertebrates are chordates but all chordates are not vertebrates.
Reason \((R)\):Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the options given below:

A Both \((A)\) and \((R)\) are correct and \((R)\) is the correct explanation of \((A)\)
B \((A)\) is correct but \((R)\) is not correct
C \((A)\) is not correct but \((R)\) is correct
D Both \((A)\) and \((R)\) are correct but \((R)\) is not the correct explanation of \((A)\)

Verified Solution

Answer & Solution

Correct Answer

(A) Both \((A)\) and \((R)\) are correct and \((R)\) is the correct explanation of \((A)\)

Step-by-step Solution

Detailed explanation

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 Xenon compounds in Column\(-I\) with its structure in Column\(-II\) and assign the correct code

Column\(-I\)	Column\(-II\)
\((a)\) \(\mathrm{XeF}_{4}\)	\((i)\) pyramidal
\((b)\) \(\mathrm{XeF}_{6} \)	\((ii)\) square planar
\((c)\) \(\mathrm{XeOF}_{4}\)	\((iii)\) distorted octahedral
\((d)\) \(\mathrm{XeO}_{3} \)	\((iv)\) square pyramidal

code : \((a) \quad (b)\quad (c) \quad (d)\)

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Assertion \((A)\):All vertebrates are chordates but all chordates are not vertebrates.Reason \((R)\):Notochord is replaced by vertebral column in the adult vertebrates.In the light of the above statements, choose the most appropriate answer from the options given below:

Step-by-step Solution

Assertion \((A)\):All vertebrates are chordates but all chordates are not vertebrates.
Reason \((R)\):Notochord is replaced by vertebral column in the adult vertebrates.
In the light of the above statements, choose the most appropriate answer from the options given below: