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Question
What is cohesion?
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Solution
The force of attraction between the water molecules is called cohesion.
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RELATED QUESTIONS
Give suitable explanation for the following:
Excessive transpiration results in the wilting of the leaves.
Give suitable explanation for the following:
Water transpired is the water absorbed.
What is wilting? Some plants show wilting of their leaves at noon even when the soil is well watered, Why is it so?
List the four advantages of transpiration to the plants.
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?
Expand the following biological abbreviations :
(i) ABA
Expand the following biological abbreviations :
IAA
Choose the correct answer:
Transpiration rate is low ____________
Briefly explain how the rate of transpiration is affected by:
The humidity of the atmosphere.
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.
Atmospheric humidity promotes transpiration from a green plant.
