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Cytokinin

Question 03:T...

Question

Question 03:

The effect of apical dominance can be overcome by which of the following hormone?
(a) IAA
(b) Ethylene
(c) Gibberellin
(d) Cytokinin

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Solution

Option (d) Cytokinin is antagonistic to the action of auxin and thus overcome the phenomenon of apical dominance.
Whereas, IAA, helps in apical dominance, ethylene in the ripening of fruits and gibberellin in overcoming bud and seed dormancy.

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Q. The affect of apical dominance can be overcome by which of the following hormone?

Q. Match the columns and choose the correct combination.

	I		II
(a)	Cytokinin	(p)	Stress hormone
(b)	Auxins	(q)	Ripening of fruits
(c)	Abscisic acid	(r)	Apical dominance
(d)	Ethylene	(s)	Bolting
		(t)	Richmond-Lang Effect

Q. Find the correct match:
1. Auxin
2. Gibberellins
3. Cytokinins
4. Ethylene

(a) Growth promoter as well as inhibitor

(b) Lateral growth
(c) Promotes bolting
(d) Cell Elongation and Apical Dominance

Question 09:

To increase sugar production in sugarcanes, they are sprayed with
(a) IAA
(b) cytokinin
(c) gibberellin
(d) ethylene

Q. Match the entries in Column - I with those of Column - II and choose the correct answer:

	Column - I		Column - II
(A)	Cytokinins	(P)	Stress hormone
(B)	Auxins	(Q)	Ripening of fruits
(C)	Abscisic acid	(R)	Apical dominance
(D)	Ethylene	(S)	Bolting
		(T)	Richmond Lang effect

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