Air Bubble Potometer Procedures

The video tutorial demonstrates how to set up and use a bubble potometer to measure the rate of water uptake in a plant shoot. It covers the steps to fill the potometer with water, attach a leafy shoot, prevent leakage, and introduce an air bubble into the capillary tube. The tutorial explains how to record the air bubble's movement over time, reset the potometer, and repeat the measurements. Finally, it guides on calculating the distance traveled by the air bubble and its rate of movement.

What is the first step in preparing the bubble potometer?

• Cutting a leafy shoot

• Filling it with water

• Smearing junctions with vaseline

• Introducing an air bubble

Why is it important to ensure no air bubbles are trapped inside the potometer?

• To avoid water loss

• To prevent leakage

• To keep the leafy shoot fresh

• To ensure accurate measurements

What should be done immediately after taking the potometer out of water?

• Close the tap of the reservoir

• Record the initial position of the air bubble

• Introduce an air bubble

• Dry the leafy shoot

What is the purpose of smearing all the junctions with vaseline?

• To prevent leakage

• To introduce an air bubble

• To dry the leafy shoot

• To record the initial position of the air bubble

How can an air bubble be introduced into the capillary tube?

• By closing the tap of the reservoir

• By smearing junctions with vaseline

• By lifting the end of the tube out of water

• By drying the leafy shoot

What should be recorded after waiting for a specific period of time?

• The initial position of the air bubble

• The final position of the air bubble

• The distance traveled by the air bubble

• The rate of movement of the air bubble

What is the purpose of opening the tap of the reservoir after recording the final position?

• To prevent leakage

• To reset the potometer

• To introduce an air bubble

• To dry the leafy shoot

What should be calculated after repeating the measurement process?

• The distance traveled by the air bubble

• The final position of the air bubble

• The rate of movement of the air bubble

• The initial position of the air bubble