Question

What measures should be taken to obtain accurate readings in a potometer?

• A. The potometer should be completely airtight.
• B. The twig should be cut obliquely - to allow a larger surface area for more intake of water.
• C. Place the twig underwater - to avoid the suction of air bubble into the xylem which might hinder absorption.
• D. The potometer should allow air inside the apparatus.

Answer 1

Answer: (A), (B), (C)

The correct options are
A

The potometer should be completely airtight.

B

The twig should be cut obliquely - to allow a larger surface area for more intake of water.

C

Place the twig underwater - to avoid the suction of air bubble into the xylem which might hinder absorption.

The measures that have to be taken to obtain accurate readings in a potometer are :

1. The potometer should be completely airtight

2. The twig should be cut obliquely - to allow a larger surface for more intake of water

3. Place the twig underwater - to avoid the suction of air bubble into the xylem which may hinder absorption