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Question
Transpiration is best defined as
Options
loss of water by the plant
evaporation of water from the aerial surfaces of a plant
loss of water, as water vapour, by a plant
release of water by a plant into the atmosphere
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Solution
evaporation of water from the surfaces of a plant
RELATED QUESTIONS
Give suitable explanation for the following:
A higher rate of transpiration is recorded on a windy day rather than on a calm day.
List any three major factors that accelerate the rate of transpiration.
Mention any three methods by which the plants tend to reduce transpiration.
In an experiment, four freshly plucked leaves (A-D) of a plant, such as those of china – rose, were treated as follows:
(a) Coated with Vaseline on its upper surface.
(b) coated on the lower surface.
(c) coated on both surface
(d) left uncoated.
All the four leaves A, B, C & D were left in a room for about 24 hours.
(i) which leaf would become most limp? Why?
(ii) which leaf would show least limping? Why?
Answer the following (only in few words);
What is the impact of more atmospheric pressure on transpiration?
Choose the correct answer:
The rate of transpiration is determined with the following instrument ____________
Choose the correct answer:
Transpiration rate is low ____________
Briefly explain how the rate of transpiration is affected by:
The humidity of the atmosphere.
Name three extrinsic factors which decrease the rate of transpiration.
