Advertisements
Advertisements
प्रश्न
Give Reasons for the following.
The raisins swell up in the water.
Advertisements
उत्तर
The raisins are dry grapes. When these are kept in water, it enters into the raisins by osmosis (endosmosis) and raisins swell up.
APPEARS IN
संबंधित प्रश्न
Differentiate between Diffusion and Osmosis (Definition)
Give appropriate biological or technical terms for the following :
Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.
Osmosis and diffusion are the same except that osmosis there is:
Define the following:
Osmosis
Choose the correct answer:
Grapes when placed in a strong sugar solution shrink because of __________
In an experiment, two sets of apparatus were set up as shown below:
In A there is a concentrated sugar solution inside the thistle funnel and red ink in the water outside the funnel. In B there is a concentrated glucose solution with red ink inside the thistle funnel and water outside the thistle funnel.
In both A and B the level of liquid inside the funnels rises up the tubes. In A the sugar solution turns red and in B, the water turns red.
Study the given observations and answer these questions:
- Name the process by which red ink moves in A and B.
- Which type of pressure forces the water molecules to move towards thistle funnels and cause a rise in the water level?
- Where does this process occur in plants and animals?
- What material could be used as a semi-permeable membrane?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Osmosis is defined as the movement of water from a concentrated sugar solution to a dilute sugar solution.
Explain the term:
Diffusion
DPD of a cell can be expressed as ______
When a cell in solution shrinks and loses its shape, then the solution is ______.
