Study the following statements.
$I.$ "$X$" hormone promotes root growth and root hair formation, thus helping the plants to increase their absorption surface.
$II.$ "$Y$" hormone induces flowering in mango and also promotes rapid internode/petiole elongation in deep-water plants, hence helping leaves or upper parts of the shoot remain above water.
$III.$ "$Z$" hormone inhibits seed germination, increases the tolerance of plants to various stresses, and plays an important role in seed development, maturation, and dormancy.
Identify the correct names of hormones marked as $X$, $Y$, and $Z$.
$I.$ "$X$" hormone promotes root growth and root hair formation, thus helping the plants to increase their absorption surface.
$II.$ "$Y$" hormone induces flowering in mango and also promotes rapid internode/petiole elongation in deep-water plants, hence helping leaves or upper parts of the shoot remain above water.
$III.$ "$Z$" hormone inhibits seed germination, increases the tolerance of plants to various stresses, and plays an important role in seed development, maturation, and dormancy.
Identify the correct names of hormones marked as $X$, $Y$, and $Z$.
- A$Y = ABA; X = Auxin; Z = GA$
- B$Z = GA; X = Auxin; Y = C_2H_4$
- C$Y = Auxin; X = C_2H_4; Z = GA$
- D$X = C_2H_4; Y = C_2H_4; Z = ABA$
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Plant movement in response to diffuse stimulus of light is
Medium
View SolutionMatch List-$I$ with List-$II$:
List-$I$ (Growth Regulator) List-$II$ (Function/Effect) $A$. $2,4-D$ $I$. Brewing industry $B$. $GA_3$ $II$. Stimulation of stomatal closure $C$. Kinetin $III$. Herbicide $D$. $ABA$ $IV$. Nutrient mobilisation
Choose the correct answer from the options given below:
| List-$I$ (Growth Regulator) | List-$II$ (Function/Effect) |
|---|---|
| $A$. $2,4-D$ | $I$. Brewing industry |
| $B$. $GA_3$ | $II$. Stimulation of stomatal closure |
| $C$. Kinetin | $III$. Herbicide |
| $D$. $ABA$ | $IV$. Nutrient mobilisation |
Choose the correct answer from the options given below:
MediumNEET 2026
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 Solution$I.$ Kinetin is a degradative substance from $DNA$.
$II.$ $ABA$ is present in all plants including lower plants.
$III.$ Low ratio of cytokinin to auxin favours root formation only.
$IV.$ $ABA$ is synthesized catabolically through glycolysis pathway.
Choose the correct combination of options.
$II.$ $ABA$ is present in all plants including lower plants.
$III.$ Low ratio of cytokinin to auxin favours root formation only.
$IV.$ $ABA$ is synthesized catabolically through glycolysis pathway.
Choose the correct combination of options.
Medium
View SolutionMatch the following (Column-$I$ with Column-$II$):
Column-$I$ Column-$II$ $a.$ Weedicide $(i)$ $GA_3$ $b.$ Bolting $(ii)$ Cytokinin $c.$ Thinning of cotton $(iii)$ Ethylene $d.$ Lateral shoot growth $(iv)$ $2, 4-D$
| Column-$I$ | Column-$II$ |
|---|---|
| $a.$ Weedicide | $(i)$ $GA_3$ |
| $b.$ Bolting | $(ii)$ Cytokinin |
| $c.$ Thinning of cotton | $(iii)$ Ethylene |
| $d.$ Lateral shoot growth | $(iv)$ $2, 4-D$ |
Medium
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