Can you say that there is a complete one - to - one overlap between the absorption spectrum of chlorophyll a and the action spectrum of photosynthesis? Justify your answer.

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Solution

According to a graph of the absorption spectrum of chlorophyll a and photosynthesis it does not overlap as chlorophyll a is the major pigment responsible for trapping light but other pigments present in thylakoids also absorb light which includes chlorophyll b, carotenoids and xanthophylls to utilize light of a wider wavelength and protect chlorophyll a from photo-oxidation.

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Similar questions

Q. Is there a complete one-to-one overlap between the absorption spectrum of chlorophyll a and the action spectrum of photosynthesis?

Question 53
In the figure given below, the black line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll-a, answer the following

(a) What does the action spectrum indicate? How can we plot an action spectrum? Explain with an example.

(b) How can we derive an absorption spectrum for any substance?

(c) If chlorophyll-a is responsible for light reaction of photosynthesis, why do the action spectrum and absorption spectrum not overlap?

Q. Which of the following conclusions is not arrived from the study of the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis?

Question 51
What can we conclude from the statement that the action and absorption spectrum of photosynthesis overlap? At which wavelength do they show peaks?

Q. Discuss the electromagnetic spectrum and the absorption spectrum of chlorophyll. Why chlorophyll is a green pigment?

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