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प्रश्न
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.
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उत्तर
(i) The apparatus is called Ganong’s Potometer.
(ii) The phenomenon is called transpiration.
(iii) The evaporative loss of water in the form of water vapour from the aerial parts of plants is known as transpiration.
(iv) Two limitations are
- It is not easy to introduce the air bubble into the capillary.
- The twig may not remain fully alive for a long time.
(v) The air bubble helps measure the rate of transpiration.
(vi) Transpiration occurs through the leaves of plants.
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संबंधित प्रश्न
State whether the following statement is true or false. Rewrite the false statement correctly.
Water absorption mainly occurs through the root-hair.
How is root hair adapted for the absorption of water from the soil?
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 ____________
The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:
Draw a diagram of the above root hair cell as it would appear when a concentrated solution of fertilizers is added near it.
Root hairs become flaccid, when fertilizers are added to the moist soil around it. Explain.
Differentiate between the following
Permeable and Semi-permeable membrane.
Multiple Choice Question:
Water will be absorbed by the root hairs when:
Outer layer of root hair is made up of ________.
Water in the root enters due to ______.
