What would happen to photosynthesis if a plant were only exposed to light with wavelengths 525-575 nm? A) Photosynthesis would occur in C₃ plants but not in C₄plants. B) Photosynthesis would occur in C₄ plants but not in C₃ plants. C) Chlorophyll a but not chlorophyll b would serve as the primary light-harvesting pigment, and photosynthesis would occur. D) The rate of photosynthesis would be slow since chlorophyll a and chlorophyll b absorb light energy weakly in this wavelength range. E) Photosystem I but not photosystem II would accept electrons from the light-harvesting apparatus, and photosynthesis would occur.

Question

Quizplus · Accepted Answer

Chlorophyll a and chlorophyll b, the primary pigments involved in photosynthesis, absorb light most efficiently in the blue (around 430-450 nm) and red (around 650-700 nm) regions of the spectrum. The wavelength range of 525-575 nm falls within the green-yellow part of the spectrum, where both chlorophyll a and b have lower absorption rates. Therefore, while photosynthesis could still occur, it would do so at a slower rate due to the weaker absorption of light energy in this range.

What Would Happen to Photosynthesis If a Plant Were Only