Multiple Choice Questions

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Which of the following is called stress hormone?

  • Abscisic acid

  • Auxin

  • Cytokinin

  • Gibberellic acid


A.

Abscisic acid

Abscisic acid is also called stress hormone because the production of this hormone is stimulated by drought, water logging and other adverse environmental conditions.


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Choose the minor carp from the following

  • Cyprinus carpio

  • Anguilla sp

  • Labeo bata

  • cetanophyrngodon idella


A substance that induces dormancy of seed is

  • ABA

  • GA

  • thio-urea

  • cytokinin


Cellular totipotency was first demonstrated by

  • F C Steward

  • Robert Hooke

  • T Schwann

  • A v Leeuwenhoek


Vascular tissue in higher plants develop from which of the following

  • Procambium 

  • Protoderm

  • Periblem

  • Cortex


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Flowering dependent on cold treatment is

  • cryotherapy

  • cryogenics

  • cryoscopy

  • vernalisation


During seed germination its stored food is mobilised by

  • ethylene

  • cytokinin

  • ABA

  • gibberellin


The discovery of gibberellins is related with one of the following

  • blast disease of rice

  • rust disease of wheat

  • bakane disease of rice

  • early blight disease of potato


Name of a gaseous plant hormone is

  • IAA

  • gibberellin

  • ethylenes

  • abscisic acid


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Which one of the following is a growth regulator produced by plants?

  • Naphthalene acetic acid

  • Zeatin

  • 2,4-dichlorophenoxy acetic acid

  • Benzyl aminopurine


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