Which of the following pairs is incorrectly m | vedclass

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(A) The correct answer is $A$ and $B$ are both incorrectly matched in the context of standard plant physiology,but typically in multiple-choice questi

Vedclass · Accepted Answer

Gibberellic acid - Leaf abscission

Vedclass · Answer

(A) The correct answer is $A$ and $B$ are both incorrectly matched in the context of standard plant physiology,but typically in multiple-choice questions,we look for the most prominent error. $1$. Gibberellic acid $(GA)$ promotes stem elongation and seed germination,while leaf abscission is primarily promoted by Abscisic acid $(ABA)$ and Ethylene. Thus,$A$ is incorrect. $2$. Cytokinin promotes cell division (cytokinesis) and delays senescence,whereas cell wall elongation is primarily the function of Auxins $(IAA)$. Thus,$B$ is also incorrect. $3$. $IAA$ (Indole$-3-$acetic acid) is an auxin that promotes cell wall elongation. This is correct. $4$. Abscisic acid $(ABA)$ is known as the stress hormone that induces stomatal closure. This is correct. Note: Since both $A$ and $B$ are incorrect,in many competitive exams,$A$ is often cited as the primary mismatch regarding abscission.

Column $I$ (Hormone)	Column $II$ (Effect/Function)
$(a)$ Auxins	$(i)$ Produces male flowers on female plant
$(b)$ Gibberellins	$(ii)$ Parthenocarpy in orange,lemon and grapes
$(c)$ Cytokinin	$(iii)$ Antitranspirant and stress tolerance in plants
$(d)$ Abscisic acid	$(iv)$ Reverses apical dominance in plants

Which of the following pairs is incorrectly matched?

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