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प्रश्न
Choose the correct answer:
Process of ascent of sap in plants occurs ___________
पर्याय
by cortex
by xylem
by phloem
by cambium
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उत्तर
Process of ascent of sap in plants occurs by xylem
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संबंधित प्रश्न
The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow
(i) Name the parts indicated by the guidelines 1 to 4.
(ii) Which is the process that enables the passage of water from the soil into the root hair?
(iii) Name the pressure that is responsible for the movement of water in the direction indicated by the arrows. Define it.
(iv) Due to an excess of this pressure sometimes drops of water are found along the leaf margins of some plants especially in the early mornings. What is the phenomenon called?
(v) Draw a well labelled diagram of the root hair cell as it would appear if an excess of fertiliser is added to the soil close to it.
The diagram of an given below demonstrates a particular process in plants. Study the same and answer the questions that follow :
(i) Name the apparatus.
(ii) Which phenomenon is demonstrated by this apparatus?
(iii) Explain the phenomenon mentioned in (ii) above.
(iv) State two limitations of using this apparatus.
(v) What is the importance of the air bubble in the experiment?
(vi) Name the structures in a plant through which the above process takes place.
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
Mention one distinct difference between the parts labelled A and B.
How is root hair structurally adapted for absorption of water from the soil?
Differentiate between the following
Permeable and Semi-permeable membrane.
The figure given below is a diagrammatic representation of a part of the cross-section of the root in the root hair zone. Study the same and then answer the questions that follow :
(i) Name the parts indicated by guidelines ‘1’ to ‘5’
(ii) Is the root hair cell unicellular or multi-cellular?
(iii) Draw a labeled diagram of the root hair cell as it would appear if some fertilizer is added to the soil close to it.
(iv) Name the process responsible for the entry of water molecules from the soil into A1 and then A2.
(v) What pressure is responsible for the movement of water in the direction indicated by arrows?
(vi) How is this pressure set up?
Root hair is ________ extension of epiblema cells.
Which part of the root helps in the maximum absorption of water and minerals?
How many regions are there in a typical root?
How many regions are there in a typical root?
