Multiple choice

According to which theory does ascent of sap take place due to rhythmic change in the osmotic pressure of living cells of xylem?

  1. Chambering theory

  2. Pulsation theory

  3. Root-pressure theory

  4. Jamin's chain theory

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A Correct answer
Explanation

According to Chambering theory (1884), ascent of sap takes place due to rhythmic change in the osmotic pressure of living cells of xylem parenchyma.