Question

Ganong's potometer may not give accurate results due to:

Options

• Use of cut twig

• Variation in temperature

• Both use of cut twig and variation in temperature

• None of these

Answer 1

None of these

Explanation:

Changes in atmospheric temperature cause the air bubble in the capillary tube to expand or contract, which alters the reading. Additionally, a cut twig has a very short lifespan and fails to transpire normally after some time.