Multiple choice

Who proposed the relay pump theory of ascent of sap?

  1. J. C. Bose

  2. Goldewski

  3. Wastermaeir

  4. Strasburger

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In 1884, Goldewski gave the relay pump theory. According to him, ascent of sap takes place due to rhythmic change in the osmotic pressure of living cells of xylem parenchyma and medullary ray.