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Photosynthesis takes place faster in

  • A.Yellow light
  • B.White light
  • C.Red light
  • D.Darkness

Answer: B

Photosynthesis is fastest in white light, because it contains every wavelength chlorophyll can use.

Chlorophyll absorbs most strongly in the blue-violet and red, and the accessory pigments capture parts of the spectrum chlorophyll misses, so the full white spectrum drives the process harder than any single colour.

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