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 hormone is involved in the phenomenon of phototropism?
Gibberellin
Cytokinin
Ethylene
Auxin
Which of the following movements in plants is due to the increased concentration of auxin?
Movement of shoot towards the source of light
Nyctinasty
Movement of sunflower towards sun
All of the above
Charles Darwin and Francis Darwin are related with
Vernalisation
Effect of plant hormones (auxin)
Photoperiodism
Phototropism
Which PGR is most likely responsible for the phenomenon observed when a plant bends towards a light source, even if the light source is unidirectional and doesn't illuminate the entire plant?
Cytokinin
Gibberellin
Auxin
Abscisic Acid
In plants, phototropism is the movement
Towards the light source
Away from the light source
Parallel to the light source
Lateral to the light source
Canary grass experiment for phototropism was firstly conducted by
Went
Darwin
Cousins
Kurosawa
After a series of experiments, it was concluded that the …A… of coleoptile was the site of transmittable influence that caused the …B… of the entire coleoptile.
Complete the given statement with the correct combination of options given in the codes below
A-root site; B-bending
A-lateral side; B-bending
A-shoot side; B-bending
A-tip; B-bending
Which plant hormone promotes cell elongation and is involved in phototropism?
Gibberellin
Cytokinin
Abscisic acid
Auxin
Substance related with phototropism in shoot, is
Ethanol
Cytokinins
Auxin
Gibberellins
Which of the following is the effect of a plant hormone, which is synthesized more in the absence of light?
Inhibits the development of seedless fruits
Responsible for closing of stomata
Induces the dormancy of seeds
Length of internodes increases
