Question

Which of the most important precaution to be observed in finding out the rate of transpiration through Ganong's potometer ________________.

• A. A broad leaf plant need to be selected
• B. The experimental shoot should be obliquely cut
• C. The shoot should be cut under water
• D. Apparatus to be filled with water

Answer 1

The correct option is C The shoot should be cut under water

The shoot should be cut under water because to prevent air from entering the vessels.

So the correct option is C.