Mineral Transport in Plants · NCERT Biology

In which condition is root pressure most easily observed in plants?

  1. During peak sunlight with high wind and low humidity
  2. When evaporation is low and soil moisture is high
  3. In very tall trees such as coastal Sequoia redwoods
  4. During periods of prolonged severe drought
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Correct answer: When evaporation is low and soil moisture is high

Root pressure is most observable when transpiration is low (such as at night or early morning) and soil moisture is high. Under these conditions, the positive pressure pushes water out of specialized leaf openings.

Difficulty: Medium Question 7 of 20

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