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उत्तर
(i) Stomatal transpiration: Stomata are minute pores confined to the epidermis of green shoot and leaves. The opening and closing of stomata are controlled by guard cells. Maximum loss (80-90 percent of the total water loss) of water from the plant tissues takes place through the stomatal opening.
(ii) Lenticular transpiration: Loss of water in the form of water vapour taking place through the lenticels present in woody stem and fruits is called lenticular transpiration. it amounts 1-5 percent of the total water loss by the plant.
(iii) Cuticular transpiration: the loss of water in the form of water vapour through the cuticle is known as cuticular Transpiration.
संबंधित प्रश्न
Transpiration pull will be maximum under which set of the following conditions?
Transpiration helps in creating ______ force and in eliminating excess ______.
Given below is an example of a certain structure and its special functional activity:
Chloroplasts and Photosynthesis.
In a similar way, write the functional activity against each of the following:
Thick cuticle and ………………………..
Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
Why was the pot enclosed in a rubber sheet?
Given below is an example of a certain structure and its special functional activity:
chloroplasts and photosynthesis
In a similar way, write the functional activity against the following:
Xylem and ______
What are lenticels? Where are they found?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Transpiration takes place only in green plants
Transpiration is significant for all except ______.
An outline sketch of a tree is shown in a diagram below. Study the same and answer the questions that follow:
- Name and define the phenomenon labelled A in the diagram.
- Write the significance of the process mentioned in A for the plants.
- What do the direction of the arrows in B and C indicate? Name the phenomena.
- Draw a neat and labelled diagram of an opened stomata.
