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प्रश्न
Root hairs become flaccid, when fertilizers are added to the moist soil around it. Explain.
उत्तर
When fertilizers are added to the moist soil around it, it will form hypertonic solution, resulting the protoplasm to shrink and plasma membrane withdraw itself from the cell wall. Hence, the root hairs also become limp or flaccid.
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संबंधित प्रश्न
The phenomenon of loss of water through a cut stem or injured part of plant is called ___________.
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Xylem is the water conducting tissue in plants.
The diagram given below represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.
Choose the correct answer:
Meaning of ascent of sap is ____________
Choose the correct answer:
The water is translocated upwards from the roots through _____________
Draw a cross-section of root showing association of soil particles with root hairs.
Draw a diagram of the root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
Define: Root hair
Which part of the root helps in maximum absorption of water and minerals?
Look at Figure 11.1. Draw another figure of the same set-up as would be observed after a few hours.
