Neet Solved Paper 2015 Question 18

Question: Transpiration and root pressure cause water to rise in plants by

Options:

A) pulling it upward

B) pulling and pushing it, respectively

C) pushing it upward

D) pushing and pulling it, respectively

Show Answer

Answer:

Correct Answer: B) pulling and pushing it, respectively

Solution:

  • Transpiration creates a negative pressure (pulling) in the leaves and upper parts of the plant, which helps draw water upward through the xylem. Root pressure, on the other hand, is a positive pressure (pushing) generated in the roots that helps push water upward from the roots into the xylem.