NEET Exam  >  NEET Questions  >  Assertion : There is a decrease in photosynth... Start Learning for Free
Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.
Reason : In red drop phenomenon the rate of photosynthesis decreases.
  • a)
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • b)
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  • c)
    If Assertion is true but Reason is false.
  • d)
    If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Assertion : There is a decrease in photosynthesis, if the photosynthet...
Although the efficiency of photosynthesis is uniform over most of the spectrum, it declines significantly in the red, i.e., at wavelength of 680 nm and above. This phenomenon is called red drop. However, it was shown by Emerson that if light at 680 nm is supplemented with light of a shorter wavelength (< 600 nm), the quantum efficiency of photosynthesis in the red can be restored to normal.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
Explore Courses for NEET exam

Top Courses for NEET

Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?
Question Description
Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Assertion : There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.Reason : In red drop phenomenon the rate of photosynthesis decreases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.c)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev