Photosynthetically active radiation (PAR) represents which of the following range of wavelength?
  • Carbon
  • Nitrogen
  • Magnesium
  • Phosphorus
Who described the first action spectrum for photosynthesis?
  • 340-450 nm
  • 400-700 nm
  • 450-950 nm
  • 500-600 nm
In the half-leaf experiment of photosynthesis, KOH solution is used because
  • T. W. Engelmann
  • Cornelius van Niel
  • Joseph Priestley
  • Julius von Sachs
Who demonstrated the importance of sunlight for the process of photosynthesis?
  • It provides O2 to the leaf.
  • It provides moisture to the leaf.
  • It helps in CO2 fixation.
  • It absorbs CO2.
In the overall process of photosynthesis, the number of CO2, water, sugar and 02 molecules utilised and produced is
  • Robert Hill
  • Engelmann
  • Jan Ingenhousz
  • Joseph Priestley
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