Plant Growth Regulators

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Plant Growth Regulators: Overview

The topic discusses the plant growth regulators as the small, simple molecules of diverse chemical composition. It also describes the physiological effects of plant growth regulators.

Important Questions on Plant Growth Regulators

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Which of the following induces dormancy?

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Which of the following hormone induces cell division?

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Induction of cell division and delay in senescence is done by

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In plant, auxin synthesis occurs in

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Avena curvature test is a bioassay for examining the activity of<

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Select the correct option regarding the phytohormone to which the given molecular structure belongs.

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The indole butyric acid is a synthetic plant hormone which belongs to the auxin family.

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Which synthetic growth regulator is used to promoting synchronized flowering in Pine-apple

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_____ is a compound which is used for plant growth and helps in the ripening of the fruit quickly. (2-Chloroethyl phosphonic acid/ Phenyl mercuric acetate/ Benzyl aminopurine)

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Cytokinins are predominantly present in meristematic tissues.

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Adenine is the precursor of cytokinins.

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_____ leaf test have been used as bioassay of cytokinins. (Bamboo/ Bean/ Pine)

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Gibberellins also enable to enhance the release of reducing sugar from cereal endosperm tissues.

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The enzyme released by the gibberellins during the bioassay of barley half-seeds is α-amylase.

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Bioassay tests are based on the increased _____ of plant cells induced by gibberellins. (elongation/ termination)

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List the uses of synthetic growth regulators.

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Explain the bioassay of cytokinin.

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Explain about the bioassay of gibberelins.

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The bakanae disease is caused by a bacterium.

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Which of the following organisms cause bakanae disease in rice plants?