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TLS Online TPP Program

#Question id: 10420

 A toggle model has been proposed for phytochrome interconversion, according to this model which option is correct?

#Unit 6. System Physiology – Plant
  1. D-ring of the chromophore in the Pr form exist in the β-hairpin form changes conformation to an α-helix by inducing red-light
  2. the structure of the α helix region of Pr is changed to an β-hairpin during the conversion of Pr to Pfr
  3. C-ring of the chromophore in the Pfr form exist in the β-hairpin form changes conformation to an α-helix by inducing red-light and conversion of pr to pfr takes place
  4. By absorbing red light conversion of Pr to Pfr, β1-region of the chromophore changes conformation to an α-helix
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TLS Online TPP Program

#Question id: 9185

#Unit 9. Diversity of Life Forms

Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?
TLS Online TPP Program

#Question id: 9186

#Unit 9. Diversity of Life Forms

A pathogenic fungus invades a plant. What does the infected plant produce in response to the attack?
TLS Online TPP Program

#Question id: 9187

#Unit 9. Diversity of Life Forms

Which of the following are defenses that some plants use against herbivory?
TLS Online TPP Program

#Question id: 9188

#Unit 9. Diversity of Life Forms

Which of the following are examples or parts of plantsʹ systemic acquired resistance against infection?
TLS Online TPP Program

#Question id: 9189

#Unit 9. Diversity of Life Forms

A plant will recognize a pathogenic invader
TLS Online TPP Program

#Question id: 9190

#Unit 9. Diversity of Life Forms

What is the probable role of salicylic acid in the defense responses of plants?