Measuring transpiration rate

What apparatus is used to measure the rate of transpiration?

• Barometer

• Potometer

• Hydrometer

• Anemometer

Why is the twig cut under water when setting up the experiment?

• To prevent the twig from drying out.

• To ensure the water in the xylem remains continuous with the water in the potometer.

• To ensure the water in the phloem remains continuous with the water in the potometer.

• To remove any air bubbles from the twig itself.

How is the rate of water absorption by the plant measured in this experiment?

• By observing the change in water level in the beaker.

• By measuring the weight of the plant.

• By tracking the movement of an air bubble in the capillary tube.

• By counting the number of leaves on the twig.

What is the main conclusion drawn from observing the experiment under different environmental conditions?

• The rate of transpiration is constant regardless of environmental conditions.

• The rate of transpiration is higher in shade than in light.

• The rate of transpiration is different in varying environmental conditions.

• Transpiration only occurs when a fan is used.