A plant hormone promotes bolting in rosette plants and is also antagonistic to the effects of abscisic acid on alpha-amylase activity. This hormone also plays a key role in apical dominance. Which of the following hormones fits this description?
Gibberellin
Auxin
Cytokinin
Ethylene
Related Questions
Which plant hormone is primarily responsible for inducing dormancy in seeds and buds, enabling them to withstand unfavorable environmental conditions?
Gibberellin (GA)
Auxin (IAA)
Cytokinin (CK)
Abscisic Acid (ABA)
I. Antagonist to GA
II. Promoted bud dormancy
III. Promoted stomatal closure
IV. Promoted abscission layer
Identify the hormone/s which promote/s all these events in plants and choose the correct option
Cytokinin
Auxin
Abscisic acid
Identify two physiological processes induced by two different phytohormones having a common precursor, which is formed due to the catalytic activity of pyruvic dehydrogenase complex.I. more female folwers in cucumber.II. a-amylase production in barley grain.III. Acceleration of fruit ripening in tomato.IV. Delay in sprouting of potato tubers.The correct combination is
I and II
I and III
II and IV
III and IV
Among the following features of ethylene, how many are antagonistic to abscisic acid?
a) Horizontal growth of seedlings b)Promotes abscission of plant organs
c) Effective in fruit ripening d) Breaking seed and bud dormancy
e) Initiates germination in some seeds
1
2
3
4
Which hormone is called the dormancy hormone?
IAA
NAA
ABA
GA
Leaf abscission, fruit fall, and bud dormancy occurs by which phytohormone?
Auxin
Cytokinin
Gibberellins
Abscisic acid
Which plant hormone promotes seed dormancy, bud dormancy and causes stomatal closure?
IAA
Abscisic acid
GA
cytokinin
Which hormone promotes seed dormancy?
Gibberellin
Cytokinin
Auxin
Abscisic acid
I. More female flowers in cucumber
II. Ξ±-amylase production is barley grain
III. Acceleration of fruit ripening in tomato
IV. Delayed in sprouting in potato tubers
From the given effects find, out the effects of ethylene and choose the correct option accordingly
I, III and IV
I, II and IV
II, III and IV
I, II and III