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प्रश्न
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
उत्तर
If a plant is uprooted, the leaves continue to lose water through transpiration, but there is no more water absorbed by the roots. This does not allow compensation for the loss of water by transpiration; hence, the leaves of the uprooted plant will wilt soon.
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संबंधित प्रश्न
Name the following:
The process by which water enters root hairs.
What would happen to the root hair of a potted plant if the soil was watered with an extremely concentrated solution of sodium chloride?
What is toxicity ?
Given below is the diagram of a cell as seen under the microscope after having been placed in a solution:
(i) What is the technical term used for the state/condition of the cell given above?
(ii) Give the technical term for the solution in which the cell was placed.
(iii) Name the parts numbered 1 to 4.
(iv) Is the cell given above a plant cell or an animal cell ? Give two reasons in support of your answer as evident from the diagram.
(v) What would you do to bring this cell back to its original condition?
The diagram given below represents the result of an experiment conducted on two freshly taken shoots of a green herbaceous plant. The lower ends dip in the water.
(i) What is the aim of the experiment?
(ii) Some parts of the stem in both the shoots have been removed. Name the conducting tissue in shoot A and in shoot B, that has been removed.
(iii) What are the results of this experiment?
Given below is an experimental demonstration.
(i) Which phenomenon has been demonstrated in the given figure?
(ii) What is the solute and what is solvent in the above experiment?
(iii) Define the phenomenon in Q. (i) above.
(iv) Give one example from your daily life experiences based on this principle.
Inner layer of root hair is made up of ______.
Draw a neat and labelled diagram of Root hair.
Trace the pathway followed by water molecules from the time it enters a plant root to the time it escapes into the atmosphere from a leaf.
Root hair occurs in the zone of ____________.
