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प्रश्न
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.
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उत्तर
|
Cell wall |
Cell membrane |
|
The cell wall of a root hair is freely permeable and allows both salt and water to pass through. |
The cell membrane of a root hair is semi-permeable and does not allow large dissolved salt molecules to pass through. |
संबंधित प्रश्न
How does movement and absorption of water take place through the roots?
Which one of the following is a characteristic NOT related with the suitability of the roots for absorbing water?
Choose the correct answer:
Swelling of wooden doors during rains is caused by ___________
Choose the correct answer:
Which tissue makes passage for ascent of sap?
Study the experimental setup in the figure and then answer the question that follow.
Explain the phenomenon mention in question 8.1 .
Draw a cross-section of root showing association of soil particles with root hairs.
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?
Which part of the root helps in maximum absorption of water and minerals?
The tubular, colorless delicate prolongations of epidennal cells are seen in which region of root in plants?
