The plant hormone responsible for apical dominance is
Cytokinin
Auxin
Ethylene
ABA
Related Questions
Which of the following hormone combinations is commercially used to stimulate flowering in pineapple for improved and consistent fruit production?
Gibberellins and Cytokinins
Auxins and Abscisic Acid
Auxins and Ethylene
Cytokinins and Abscisic Acid
Difference between kinetin and zeatin is
Kinetin is active zeatin, is non-active
Zeatin is active kinetin, is non-active
Zeatin is synthetic, kinetin is natural
Zeatin is natural, kinetin is synthetic
Identify the pair of physiological effects of two phytohormones, which are synthesized from different amino acids?I. Formation of perennating buds in Lemna.II. Simultaneous flowering in pineapple.III.Bolting in cabbage.IV.Apical dominance in Polyalthia.
I and II
II and IV
III and IV
I and III
The 'Richmond-Lang effect', which refers to the delay of senescence in leaves by cytokinins, is primarily attributed to their influence on:
Ethylene production
Cell wall synthesis
Nutrient mobilization
Stomatal closure
Auxins promote
Cell growth and enlargement
Cambial activity
Apical dominance
All of the above
In coleoptile tissue, auxin is
Not transported because it is used where it is made
Transported by diffusion
Transported from the base to tip by osmosis
Produced by growing apices of stem, which migrate to the region of its action
Deep-water rice plants adapt to flooding by elongating their internodes and petioles. This response is primarily regulated by which plant hormone?
Cytokinin
Gibberellin
Abscisic acid
Ethylene
Rapid and dramatic increase in shoot length is called
Triple response growth
Bolting
scarification
Night break effect
Which plant hormone promotes seed dormancy, bud dormancy and causes stomatal closure?
IAA
Abscisic acid
GA
cytokinin
Cytokinins are formed in
Roots
Leaves
Fruits
Stems
