Question

Mention any two limitation in the use of potometer.

Answer 1

Answer:

1) Introducing the air bubble is not very easy.

2) The twig may not remain fully alive for a long time.

3) Any changes in the temp of atmosphere may affect the position of the air bubble in the capillary tube.

Explanation:

Answer 2

Explanation:

1. The Potometer does not measure the rate of transpiration accurately because not all of the water that is taken by the plant is used for transpiration (water taken might be used for photosynthesis or by the cells to maintain turgidity)

2. Introducing the air bubble is not very easy.

3. The twig may not remain fully alive for a long time.

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