Advertisements
Advertisements
प्रश्न
Explain the Term: Osmosis
उत्तर
Osmosis: Osmosis is a special type of diffusion which involves the movement of solvent molecules from a region of their higher concentration to their lower concentration.
APPEARS IN
संबंधित प्रश्न
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.
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
Answer the following question.
Define and or explain the term:
Plasmolysis
Explain why:
We gargle with saline solution in case of throat infection.
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A and B), the container A having water and the other (B) containing concentrated sugar solution. After 24 hours when the cubes were examined, those placed in water were found to be firm and had increased slightly in size and those placed in concentrated sugar solution were found to be soft and somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the softness and decrease in size of the potato cubes which were placed in sugar solution.
Define the Cohesive and Adhesive forces.
Give at least three uses of water to green plants
Give Reasons for the following.
We gargle with saline water in case of throat infection.
The beaker is divided into two chambers A and B. The big circle represents solute and the small circles solvent.
(i) What can you say about the size of the holes in the membrane, if it is to behave semi- permeably between these two?
(ii) Will the solvent molecules pass through the membrane from left to right, from right to left, in either direction or in both directions?
(iii) In which direction will there be a net movement of solvent molecules?
When a cell in solution shrinks and loses its shape, then the solution is ______.
