Exceptionally the positive hydrostatic pressure generated by root pressure is about___________?
Correct answer: B. 800 Kpa
- A. 600 Kpa
- B. 800 Kpa
- C. 1000 Kpa
- D. 900 Kpa
Explanation
Exceptional root pressure is commonly stated to reach about 800 kPa, meaning a positive pressure of 800 kPa in the xylem. Students may choose 1000 kPa because it is a round value, but the standard textbook estimate in this question is 800 kPa.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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