Question

give reason for
1.cell wall is found in plant.
2. Vegetable release water after adding salt.
3.plasma membrane is called selectively permeable membrane.
4.Viruses are inactive outside a living body.




plz tell full question ​

Answer 1

Answer:

Hey bestiee...

Explanation:

here's your answer...

ans 1) Because when it enters in a high water potential solution as water moves in, the water exerts turgor pressure on the cell wall and the cell wall thus exerts an apposing pressure to keep water out. Hence cell wall is needed for the plant.

ans 2) On adding salt, the external medium is made hypertonic, i.e., concentration of water is lowered as compared to the concentration of water inside the cell. Thus, water is released from the vegetables due to exosmosis

ans 3) The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse.

ans 4) because they need to find a host to reproduce ......because they cannot reoroduce outside a living body...

thanks for asking..