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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
A plant exposed to unidirectional light exhibits phototropism. If the tip of the coleoptile is removed and replaced with a gelatin block, then illuminated from one side, which of the following will be observed?
The coleoptile will bend towards the light source.
The coleoptile will bend away from the light source.
The coleoptile will not bend towards the light source.
The coleoptile will exhibit random growth.
Which plant hormone promotes cell elongation and is involved in phototropism?
Gibberellin
Cytokinin
Abscisic acid
Auxin
Which hormone is involved in the phenomenon of phototropism?
Gibberellin
Cytokinin
Ethylene
Auxin
Which of the following processes is concerned with Cholodny-Went theory?
Photomorphogenesis
Photoperiodism
Phototropism
photorespiration
The flowers of Oxalis open during the day and close at night, such type of movement is
Photonasty
Nyctinasty
Phototactic
Seismonastic
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
Canary grass experiment for phototropism was firstly conducted by
Went
Darwin
Cousins
Kurosawa
Charles Darwin and Francis Darwin are related with
Vernalisation
Effect of plant hormones (auxin)
Photoperiodism
Phototropism
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
