Which of the following can bring about the greatest increase in the rate of transpiration?

  • A Increased humidity
  • B Reduced temperature
  • C Reduced wind speed
  • D Reduced humidity
jamb 1991biology

The correct answer is D. Reduced humidity

Relative humidity: As the relative humidity of the air surrounding the plant rises the transpiration rate falls. It is easier for water to evaporate into dryer air than into more saturated air.

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