Match the columns and choose the correct option.
I II
(p) Control of weeds (i) Gibberellin
(q) Induction of germination (ii) Cytokinin
(r) Ripening of fruit (iii) 2, 4-D
(s) Delaying of senescence (iv) Ethylene

p - ii, q - iv, r - iii, s - i

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p - iii, q - i, r - iv, s - ii

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p - i, q - ii, r - iv, s - iii

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p - ii, q - iii, r - i, s - iv

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Solution

The correct option is C p - iii, q - i, r - iv, s - ii
Ethylene is a plant hormone. It is also called as ripening hormone as it induces ripening of fruits in plants. Gibberellin is a plant hormone. It induces stem elongation, flowering, and germination. A 2, 4-D is a synthetic auxin hormone. It is called as weedicide as it kills the weeds. Cytokinin is a plant hormone. It induces cell division or cytokinesis. It delays the senescence of leaves.
Thus, the correct answer is option B.

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Q. Match the items in column I with those in column II, and choose the CORRECT answer.

Column I	Column II
P. Control of weeds	i. Gibberellin
Q. Induction of germination	ii. Cytokinin
R. Ripening of fruit	iii. $2, 4$ -D
S. Delaying of senescence	iv. Ethylene

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$\begin{matrix} F e a t u r e o f c a c t i & R e a s o n s a . Spiny leaves & (i) Absorbing water from depths of soil b . Thick, round fleshy stems & (i i) Prevent loss of water by transpiration c . Deep roots & (i i i) Store water d . Closed stomata during the day & (i v) Prevent animals from eating the cactus e . Carbon dioxide storage during the night \end{matrix}$

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	Column I		Column II
$(a)$	Auxin	$(i)$	Colouring test lemon
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I	II
(p) Control of weeds	(i) Gibberellin
(q) Induction of germination	(ii) Cytokinin
(r) Ripening of fruit	(iii) 2, 4-D
(s) Delaying of senescence	(iv) Ethylene

Match the columns and choose the correct option. I II(p) Control of weeds(i) Gibberellin(q) Induction of germination(ii) Cytokinin(r) Ripening of fruit(iii) 2, 4-D(s) Delaying of senescence(iv) Ethylene

Match the columns and choose the correct option.
I II
(p) Control of weeds (i) Gibberellin
(q) Induction of germination (ii) Cytokinin
(r) Ripening of fruit (iii) 2, 4-D
(s) Delaying of senescence (iv) Ethylene