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  4. The rate of photosynthesis of a freshwater plant is measured using five spectral colours. Which sequence of colours would give an increasing photosynthetic response? Smallest → Largest response Smallest Largest response (a) Blue Green Yellow Orange Red (b) Green Yellow Orange Red Blue (c) Red Orange Yellow Green Blue (d) Yellow Green Orange Blue Red

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Q. The rate of photosynthesis of a freshwater plant is measured using five spectral colours. Which sequence of colours would give an increasing photosynthetic response?
Smallest $\to$ Largest response
Smallest Largest response
(a) Blue Green Yellow Orange Red
(b) Green Yellow Orange Red Blue
(c) Red Orange Yellow Green Blue
(d) Yellow Green Orange Blue Red

Photosynthesis in Higher Plants

Solution:

Correct answer is (b) b