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  • Statement 1. When lettuce seeds are exposed to blue light, Pr is transformed to Pfr, which suppressing the germination response. Statement&nbs

Statement 1. When lettuce seeds are exposed to blue light, Pr is transformed to Pfr, which suppressing the germination response.

Statement  2. On the other hand, the exposure of red-illuminated seeds to far-red light will cause Pr to revert to Pfr, which induces the cellular responses that lead to germination

Option: 1

Statement 1 is incorrect


Option: 2

Statement 2 is incorrect


Option: 3

Both statements are incorrect

 


Option: 4

Both statements are correct


Answers (1)

best_answer

Statement 1 states that when lettuce seeds are exposed to blue light, Pr (inactive form of phytochrome) is converted to Pfr (active form of phytochrome), which suppresses the germination response. This is a correct statement as the conversion of Pr to Pfr is associated with physiological responses, including the inhibition of germination.

Statement 2 states that the exposure of red-illuminated seeds to far-red light will cause Pr to convert back into Pfr, which induces the cellular responses that lead to germination. This is also a correct statement as the conversion of Pfr to Pr is associated with the promotion of germination and other cellular responses.

Both statements accurately describe the role of phytochrome and its different forms in regulating germination responses in plants.

Option 4 is the correct answer. 

 

Posted by

rishi.raj

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