Identify two of the following phytohormones,which regulate the stomatal movements?
$I.$ $IAA$
$II.$ $GA_3$
$III.$ $Zeatin$
$IV.$ $ABA$
$I.$ $IAA$
$II.$ $GA_3$
$III.$ $Zeatin$
$IV.$ $ABA$
- A$I$ and $III$
- B$II$ and $III$
- C$III$ and $IV$
- D$II$ and $IV$
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Which one of the following pairs of plant hormones inhibits flowering in some plants?
$A$ physiological xerophyte is
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View SolutionThe pigment involved in photomorphogenetic movements is
Easy
View SolutionMatch column-$I$ with column-$II$ and select the correct option using the codes given below.
Column-$I$ Column-$II$ $A$. Cytokinin $i$. Stimulates closure of stomata $B$. Ethylene $ii$. Increases stem length $C$. Gibberellin $iii$. Promotes lateral shoot growth $D$. Abscisic acid $iv$. Found in large amounts in tissues undergoing senescence
| Column-$I$ | Column-$II$ |
| $A$. Cytokinin | $i$. Stimulates closure of stomata |
| $B$. Ethylene | $ii$. Increases stem length |
| $C$. Gibberellin | $iii$. Promotes lateral shoot growth |
| $D$. Abscisic acid | $iv$. Found in large amounts in tissues undergoing senescence |
Medium
View SolutionMatch column $I$ with column $II$ and select the correct option:
Column $I$ (Precursor/Term) Column $II$ (Associated Hormone) $(a)$ Tryptophan $(i)$ Cytokinin $(b)$ Mevalonic acid $(ii)$ Abscisic acid $(c)$ Kinetin $(iii)$ Gibberellins $(d)$ Dormin $(iv)$ Auxin
| Column $I$ (Precursor/Term) | Column $II$ (Associated Hormone) |
|---|---|
| $(a)$ Tryptophan | $(i)$ Cytokinin |
| $(b)$ Mevalonic acid | $(ii)$ Abscisic acid |
| $(c)$ Kinetin | $(iii)$ Gibberellins |
| $(d)$ Dormin | $(iv)$ Auxin |
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