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प्रश्न
Root hairs become flaccid, when fertilizers are added to the moist soil around it. Explain.
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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.
संबंधित प्रश्न
The process by which root hairs absorb water from the soil.
The diagram of an given below demonstrates a particular process in plants. Study the same and answer the questions that follow:
- Name the apparatus.
- Which phenomenon is demonstrated by this apparatus?
- Explain the phenomenon mentioned in (ii) above.
- State two limitations of using this apparatus.
- What is the importance of the air bubble in the experiment?
- Name the structures in a plant through which the above process takes place.
Differentiate between the following:
Guttation and bleeding
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
Explain the mechanism of closing and opening of the stomata.
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.
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
The root hair cell is in a turgid state. Name and explain the process that caused this state.
Give Technical Term for the following.
Tissue which transports manufactured food from leaves to other parts of the plant.
Describe structure of root hair.
Identify labels x, y, z in the given figure of root showing different regions.
