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प्रश्न
Name a plant hormone responsible for bending of a shoot of a plant when it is exposed to unidirectional light. How does is promote phototropism?
उत्तर
Auxin is the plant hormone that causes a plant's shoot to bend when it is exposed to unidirectional light. Auxin accumulates on the side of the shoot that is shaded, causing the cells on that side to elongate more than the cells on the side that is exposed to light, which causes the shoot to bend in the direction of the light source.
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संबंधित प्रश्न
What is the stimulus in geotropism?
Give the scientific terms used to represent the Bending of a shoot towards light.
What does a stem (or shoot) do in response to light? What is this phenomenon known as?
Which of the following is not caused by a growth movement?
The bending of the root of a plant away from a source of light is caused by a plant hormone called :
(a) cytokinin
(b) gibberellin
(c) abscisic acid
(d) auxin
The leaves of Mimosa are sensitive to ____________.
Give an example of negative hydrotropism.
Write the scientific terms used to represent.
Leaves fold up and droop in touch-me-not plant Mimosa pudica
Which parts of a plant exhibit Positive hydrotropism?
The growth movement of plant parts which occurs due to touch stimulus is called ______.
