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What is the main difference between root pressure and transpiration pull?

Answer and explanation

Correct answer: Root pressure pushes from below and transpiration pull pulls from above

The governing concept is the comparison of forces involved in xylem water transport. Root pressure develops when roots actively absorb ions and water enters by osmosis, producing a positive push from below. Transpiration pull develops when evaporation from leaves creates negative pressure that pulls the continuous water column upward. Thus option A states the key difference; the other options concern digestion, excretion, or lungs and are irrelevant.

Related tags

Root-PressureTranspiration-PullXylemTransportationLife ProcessesScienceClass 10 Mcq

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