Phytohormones are used in:

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(D) Phytohormones (plant growth regulators) have various applications in agriculture and horticulture:$1$. Parthenocarpy: Auxins and gibberellins are

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All the above

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(D) Phytohormones (plant growth regulators) have various applications in agriculture and horticulture:$1$. Parthenocarpy: Auxins and gibberellins are used to induce the development of seedless fruits without fertilization.$2$. Grafting: Auxins are often applied to the cut surfaces of scions to promote root initiation and successful union.$3$. Ripening of fruits: Ethylene is widely used to accelerate the ripening process in climacteric fruits like bananas and mangoes.Therefore,all the mentioned processes utilize phytohormones.

Column-$I$	Column-$II$
$a.$ Ethephon	$(i)$ $GA$
$b.$ Terpene	$(ii)$ Ethylene
$c.$ Zeatin	$(iii)$ Natural auxin
$d.$ $IAA$	$(iv)$ Cytokinin

Column-$I$	Column-$II$
$a.$ Weedicide	$(i)$ $GA_3$
$b.$ Bolting	$(ii)$ Cytokinin
$c.$ Thinning of cotton	$(iii)$ Ethylene
$d.$ Lateral shoot growth	$(iv)$ $2, 4-D$

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$a.$ Ethephon $(i)$ $GA$
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Match the following (Column-$I$ with Column-$II$):

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