Advertisements
Advertisements
प्रश्न
Differentiate between the following
Permeable and Semi-permeable membrane.
Advertisements
उत्तर
| Permeable Membrane | Semi-permeable Membrane |
| A permeable membrane has pores which allow free movement of solute as well as solvent molecules. | A semi-permeable membrane has pores which allow only solvent molecules to pass through them. |
APPEARS IN
संबंधित प्रश्न
Differentiate between the following:
Guttation and bleeding
Explain the mechanism of closing and opening of the stomata.
Study the diagram given below and answer the questions that follow:
- Name the process being studied in the above experiment.
- Explain the process mentioned in (a) above
- Why is oil placed over water?
- What do we observe with regard to the level of water when this set-up is placed in (1) bright sunlight, (2) humid conditions and (3) windy days?
- Mention any three adaptations found in plants to foster the process mentioned in (a) above
A thin strip of epidermal cells from the fleshy scales of an onion bulb was examined in a drop of water, under a microscope. All the epidermal cells looked alike and the figure alongside represents one of them. The thin strip was then transferred to a drop of strong sugar solution and re-examined under the microscope after about five minutes.
(i) Make a sketch of one of the epidermal cells, as it might appear after immersion in a strong sugar solution. Label any two parts which have undergone a change.
(ii) Give the scientific term for the change shown in Q.(i) above.
(iii) What would you do to bring this cell back to its original condition?
(iv) Give the scientific term used for the recovery of the cell as a result of the step taken in Q.(iii) above.
Name the following:
The solution outside the cell having lower solute concentration than the fluids.
________ type of tissues are present in epiphytic roots.
Inner layer of root hair is made up of ______.
Root hairs are ______
Root hair occurs in the zone of ____________.
Look at Figure. Draw another figure of the same set-up as would be observed after a few hours.
