Differentiate between the following plant growth regulators:
$(1)$ Auxins $(IAA)$ and Abscisic acid $(ABA)$
$(2)$ Gibberellins and Ethylene
$(1)$ Auxins $(IAA)$ and Abscisic acid $(ABA)$
$(2)$ Gibberellins and Ethylene
(N/A) $(1)$ Auxins $(IAA)$ vs. Abscisic acid $(ABA)$:
- Auxins are growth-promoting hormones that stimulate cell elongation,root initiation,and apical dominance.
- Abscisic acid $(ABA)$ is a growth-inhibiting hormone that promotes seed dormancy,stomatal closure during water stress,and abscission of leaves and fruits.
$(2)$ Gibberellins vs. Ethylene:
- Gibberellins are growth-promoting hormones that stimulate stem elongation,seed germination,and flowering.
- Ethylene is a gaseous hormone that primarily promotes fruit ripening,senescence of leaves and flowers,and horizontal growth of seedlings.
- Auxins are growth-promoting hormones that stimulate cell elongation,root initiation,and apical dominance.
- Abscisic acid $(ABA)$ is a growth-inhibiting hormone that promotes seed dormancy,stomatal closure during water stress,and abscission of leaves and fruits.
$(2)$ Gibberellins vs. Ethylene:
- Gibberellins are growth-promoting hormones that stimulate stem elongation,seed germination,and flowering.
- Ethylene is a gaseous hormone that primarily promotes fruit ripening,senescence of leaves and flowers,and horizontal growth of seedlings.
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Similar Questions
Match 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 SolutionChoose the incorrect pair.
Medium
View SolutionMatch the following scientists with their respective contributions:
$(a)$ Maheshwari $(I)$ Pre-sowing treatment of seeds of $Phaseolus$ $aureus$ with $IAA$
$(b)$ Das $(II)$ $Avena$ curvature test
$(c)$ Went $(III)$ Work on seedless fruit in cucumber
$(d)$ Chakravarty $(IV)$ Successful culture of an ovule of $Papaver$ using $IAA$ and kinetin
Select the correct matching sequence:
$(a)$ Maheshwari $(I)$ Pre-sowing treatment of seeds of $Phaseolus$ $aureus$ with $IAA$
$(b)$ Das $(II)$ $Avena$ curvature test
$(c)$ Went $(III)$ Work on seedless fruit in cucumber
$(d)$ Chakravarty $(IV)$ Successful culture of an ovule of $Papaver$ using $IAA$ and kinetin
Select the correct matching sequence:
Medium
View SolutionMatch the following.
Column-$I$ Column-$II$ $A$. Ethephon $P$. Inhibits seed germination $B$. $ABA$ $Q$. They all are acidic $C$. $GA$ $R$. Help overcome the apical dominance $S$. Hastens fruit ripening in tomatoes and apples
| Column-$I$ | Column-$II$ |
| $A$. Ethephon | $P$. Inhibits seed germination |
| $B$. $ABA$ | $Q$. They all are acidic |
| $C$. $GA$ | $R$. Help overcome the apical dominance |
| $S$. Hastens fruit ripening in tomatoes and apples |
Medium
View SolutionCoiling of garden pea tendrils around any support is an example of
MediumAIPMT 2010
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