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प्रश्न
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Flaccidity is the reverse of turgidity.
पर्याय
True
False
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उत्तर
True
APPEARS IN
संबंधित प्रश्न
The diagram given below represents a plant cell after being placed in a strong sugar solution. Study the diagram and answer the questions that follow:
- What is the state of the cell shown in the diagram?
- Name the structure that acts as a selectively permeable membrane.
- Label the parts numbered 1 to 4 in the diagram.
- How can the above cell be brought back to its original condition? Mention the scientific term for the recovery of the cell.
- State any two features of the above plant cell which is not present in animal cells.
Explain Turgor pressure
Give scientific reasons : Balsam plants wilt during mid-day even if the soil is well watered.
Fig. represents aprocess in plants. The set up was placed in bright sunlight. Answer the following questions:
-
- Name the physiological process depicted in the figure.
- Why was oil added to the water?
- When placed in bright sunlight for four hours, what do you observe with regard to the initial and final weight of the plant? Give a suitable reason for your answer.
- What happens to the level of water when this setup is placed in:
- Humid conditions?
- Windy conditions?
- Mention any three adaptations found in plants to overcome the process mentioned in (a).
- Explain the term ‘Guttation’.
Differentiate between the following:
Turgor pressure and wall pressure
Differentiate between the following:
Plasmolysis and Deplasmolysis.
Name the following:
The process by which wilting or drooping of leaves occurs.
Fill in the Blank
Wilting and drooping of leaves is due to loss of ________.
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:
- The parts labelled as 1, 2, 3 and 4 are:
- Root hair, Xylem vessel, Soil particles, Cortex respectively.
- Xylem vessel, Soil particles, Root hair, Cortex respectively.
- Root hair, Xylem vessel, Cortex, Soil particles respectively.
- Cortex, Soil particles, Xylem vessel, Root hair respectively.
- The process that enables the passage of water from soil into the root hair is:
- Diffusion
- Active transport
- Osmosis
- Passive absorption
- The kind of force which exists between a liquid and any surface is called as:
- Cohesive force
- Adhesive force
- Capillarity
- Suction force
- The kind of force between the same kind of liquid molecules is:
- Capillary force
- Transpirational pull
- Adhesive force
- Cohesive force
- Sometimes exudation of water occurs from the margin of the leaves in the early morning or night. It is termed as:
- Transpiration
- Guttation
- Bleeding
- Osmosis
