Sankalp NEET Full Test-2 Question-126 Solution

Question: 126 Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem.

Reason R : Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves.

In the light of the above statements, choose the correct answer from the options given below :

(1) \mathbf{A} is true but \mathbf{R} is false.

(2) \mathbf{A} is false but \mathbf{R} is true.

(3) Both \mathbf{A} and \mathbf{R} are true and R is the correct explanation of \mathbf{A}.

(4) Both \mathbf{A} and \mathbf{R} are true but \mathbf{R} is NOT the correct explanation of \mathbf{A}.

Answer: Option (3)

Explanation:

A flower is considered a modified shoot because it develops from the shoot apical meristem,

which differentiates into a floral meristem.

During flower formation, the internodes of the shoot become highly condensed.

As a result of this condensation, different floral appendages such as sepals, petals,

stamens and carpels arise laterally at successive nodes instead of leaves.

This structural modification of the shoot explains why a flower is regarded as a modified shoot.

Thus, both Assertion A and Reason R are true, and Reason R correctly explains Assertion A.

Hence, Option (3) is the correct answer.

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