Select an incorrect match.

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Question

(D) The correct biosynthetic precursors for plant hormones are as follows:$1$. Tryptophan is the precursor for Auxin (Indole$-3-$acetic acid).$2$. Met

Vedclass · Accepted Answer

Violaxanthin $\rightarrow$ $GA_3$

Vedclass · Answer

(D) The correct biosynthetic precursors for plant hormones are as follows:$1$. Tryptophan is the precursor for Auxin (Indole$-3-$acetic acid).$2$. Methionine is the precursor for Ethylene.$3$. $tRNA$ (specifically adenine derivatives in $tRNA$) is the precursor for Cytokinin.$4$. Violaxanthin is a carotenoid,which is the precursor for Abscisic Acid $(ABA)$,not $GA_3$ (Gibberellic Acid). Gibberellic Acid is derived from Acetyl $CoA$ via the mevalonic acid pathway.Therefore,the incorrect match is Violaxanthin $\rightarrow$ $GA_3$.

Column-$I$	Column-$II$
$P$. Indole compounds	$I$. $IAA$
$Q$. Adenine derivatives	$II$. $ABA$
$R$. Carotenoid derivatives	$III$. $GA_3$
$S$. Terpenes	$IV$. Kinetin
$T$. $C_2H_4$	$V$. Ethylene

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Match the following columns:
Column-$I$ Column-$II$
$P$. Indole compounds $I$. $IAA$
$Q$. Adenine derivatives $II$. $ABA$
$R$. Carotenoid derivatives $III$. $GA_3$
$S$. Terpenes $IV$. Kinetin
$T$. $C_2H_4$ $V$. Ethylene

Which one of the following pairs is not correctly matched?

The role of ethylene and abscisic acid is both positive and negative. Justify the statement.

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