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प्रश्न
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.
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उत्तर
- Transpiration, in plants, is the evaporative loss of water from aerial portions (leaves and stems).
- Significance of transpiration for the plants:
- Cooling effect
- Creating Suction force
- Distribution of water and minerals.
- Arrow B shows water rising up the trunk, and the phenomenon is lenticular transpiration in the ascent of sap.
Endosmosis is the phenomenon whereby arrow C denotes water absorbed by roots from the earth. 
APPEARS IN
संबंधित प्रश्न
Transpiration helps in creating ______ force and in eliminating excess ______.
(a) State whether the following statements are True Or False?
(b) Rewrite the false statements,in the correct form by changing either the first or the last word only .
Voltmeter is an instrument used for measuring the rate of transpiration in green plants.
Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
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 ______
Give Reasons for the following:
Forest bring in the rain, transpiration is the cause.
Explain the Term
Lenticel
Differentiate Between Transpiration and Evaporation.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Root hairs are the extensions of the outer epidermal cells of the root
Write the functional activity of the following structure:
Lenticels
