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प्रश्न
Give Reasons for the following.
Freshwater fish cannot survive in seawater.
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उत्तर
The seawater is saline (having more concentration of salts) and acts as a hypertonic solution for the freshwater. So freshwater fish cannot survive in seawater as it causes the plasmolysis of the cells of the fish and ultimately the fish will die.
संबंधित प्रश्न
The highest water potential (capacity to move out higher concentrated solution) is that of ______.
What is responsible for guttation?
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Define the cohesive force.
Give Reasons for the following.
Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered. Why?
Differentiate between:
Osmosis and Diffusion
The diagram below represents an experimental set up to demonstrate a vital process. Study the same and then answer the questions that follow:
(i) Name the process.
(ii) Define the above named process.
(iii) What would you observe in the experimental setup after an hour or so?
(iv) What control experiment can be set up for the above experiment?
(v) Keeping in mind the root hair cell and its surrounding name the part that corresponds to (1) Concentrated sugar solution, (2) Parchment paper, (3) Water in the beaker.
(vi) Name any other substance that can be used instead of parchment paper in the above experiment.
(vii) Mention two advantages of this process to the plant.
Give Technical Term for the following.
Solutions which have the same osmotic pressure.
Name the following:
Name the process by which water enters the root hair cell.
DPD of a cell can be expressed as ______
