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प्रश्न
What part is played by the cell wall?
उत्तर
Cell wall separates the two solutions - cell sap and soil solution and is permeable which means it allows the water to enter inside the root hair cells by endosmosis.
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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.
What are root hair? Mention the function performed by the root hair.
How does movement and absorption of water take place through the roots?
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The cell wall of the root cell is a differentially permeable membrane.
Explain the mechanism of closing and opening of the stomata.
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
Guttation in plants occurs maximum at midday.
Define: Root hair
Minerals cannot be passively absorbed by the roots.
Identify labels x, y, z in the given figure of root showing different regions.
