Choose the incorrect statement.

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(D) The correct answer is $D$. $PGRs$ (Plant Growth Regulators) are not divided into three groups based on their functions. Instead,they are broadly c

Vedclass · Accepted Answer

$PGRs$ are divided into three groups based on their functions in a living plant body.

Vedclass · Answer

(D) The correct answer is $D$. $PGRs$ (Plant Growth Regulators) are not divided into three groups based on their functions. Instead,they are broadly classified into two main groups based on their physiological roles: $1$. Plant Growth Promoters (e.g.,auxins,gibberellins,and cytokinins) which promote growth activities like cell division,cell enlargement,and pattern formation. $2$. Plant Growth Inhibitors (e.g.,abscisic acid) which play a role in plant responses to wounds and stresses of biotic and abiotic origin,and are involved in various growth-inhibiting activities like dormancy and abscission. Therefore,the statement that they are divided into three groups is incorrect.

Column-$I$	Column-$II$
$A$. $F. W. Went$	$1$. $Kinetin$
$B$. $E. Kurosawa$	$2$. $Gibberellic$ $acid$
$C$. $Skoog$ $and$ $Miller$	$3$. $Auxin$
$D$. $Cousin$	$4$. $Ethylene$

List-$I$	List-$II$
$A$. Auxin	$I$. Miller et al.
$B$. Gibberellins	$II$. $H$.$H$. Cousins
$C$. Ethylene	$III$. $E$. Kurosawa
$D$. Cytokinin	$IV$. Charles Darwin and Francis Darwin

Similar Questions

Who for the first time speculated the presence of organ-forming substances in plants,now called hormones?

Match the following columns regarding the discovery of plant growth regulators:
Column-$I$ Column-$II$
$A$. $F. W. Went$ $1$. $Kinetin$
$B$. $E. Kurosawa$ $2$. $Gibberellic$ $acid$
$C$. $Skoog$ $and$ $Miller$ $3$. $Auxin$
$D$. $Cousin$ $4$. $Ethylene$

Select the correct matching sequence:

Match List-$I$ with List-$II$:

List-$I$ List-$II$

$A$. Auxin $I$. Miller et al.

$B$. Gibberellins $II$. $H$.$H$. Cousins

$C$. Ethylene $III$. $E$. Kurosawa

$D$. Cytokinin $IV$. Charles Darwin and Francis Darwin

Choose the correct answer:

How were different plant growth regulators discovered?

Define or explain: Plant growth regulators.

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