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Question

What Plant Has The Highest Rate Of Photosynthesis?


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Solution

  1. The C4 plants show a high rate of photosynthesis as compared to C3 plants because photorespiration does not occur in C4 plants
  2. Photorespiration is a wasteful process that occurs in C3 plants only.
  3. The maximum rate of photosynthesis occurs in the red and blue regions of the visible light as seen in the absorption spectra of chlorophyll a and b.
  4. Approximately, C4 plants have 50% higher photosynthesis efficiency as compared to C3 plants this is a result of different mechanisms of carbon fixation by two types of photosynthesis.
  5. C4 plants possess kranz anatomy in their leaves, which means vascular bundles are surrounded by photosynthetic bundle sheath cells.
  6. In C4 plants RuBisCO is only present in bundle sheath cells, in that case, C3 cycle only occurs in bundle sheath cells.
  7. Atmospheric Co2 is pushed into the bundle sheath cells through C4 cycle.
  8. In C4 plants concentration of Co2 is always maintained in bundle sheath cells which makes C4 plants more efficient in the rate of photosynthesis as compared to C3 plants.

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