Question

Exudation of water from the cut end of basal part of stem is due to ...........

• A. osmotic pressure
• B. transpiration
• C. root pressure
• D. low temperature

Hint:

Root pressure is a phenomenon where water is pushed upwards through the plant due to pressure created in the roots.

Answer 1

The Correct Option is C

Step 1: Understanding the process of exudation.
Exudation of water from the cut end of a stem is primarily caused by root pressure. Root pressure results from the accumulation of water and minerals in the roots, pushing water up through the stem.
Step 2: Analyzing the options.
(A) osmotic pressure: Incorrect. Osmotic pressure helps in the movement of water, but it is not the primary cause of exudation at the cut end of the stem.
(B) transpiration: Incorrect. Transpiration is the loss of water through stomata, but it does not directly cause exudation from a cut stem.
(C) root pressure: Correct. Root pressure is the primary cause of water exudation from the cut end of the stem.
(D) low temperature: Incorrect. Low temperature does not directly cause the exudation of water.
Step 3: Conclusion.
The correct answer is (C) root pressure, as it is responsible for the exudation of water from the cut end of the stem.