Question

A potted plant was watered and then the pot was enclosed in a plastic bag tied securely around the
base of the plant stem. The plant, pot, and plastic bag were weighed at 9 a.m. and then again at 4 p.m.
During this time there was a loss in weight of 35 g. From these results,

3

a. What was the plant’s rate of transpiration?

Answer 1

Answer:

pot plant was watered and the pot enclosed in a plastic bag tied securely round the base of the stem. The plant was weighed at 9 a.m. and 4 p.m. During this time it lost 32g in weight. a) From these results, what was the plant's rate of transpiration? b) Why might this calculated rate be slightly inaccurate (i) in daylight, (ii) in darkness? c) What was the point of (i) watering the plant, (ii) enclosing the pot in a plastic bag? Iron un hynlant narror through it and is eyannrated to the atmosphere.

Answer

Answer 2

5 gram/hour is the plant's rate of transpiration.

Explanation:

• The rate of transpiration is defined as the amount of water transpired from the leaves of the plant which is absorbed from the soil to the environment.

• Since the difference between two weight measured time is seven hours and the amount of weight which became less or in other words the amount of water transpired is 35 grams, The rate of transpiration can be obtained using (35/7) grams per hour.

• Therefore the rate of transpiration is five grams per hour.