Question

observe the change of dry grapes in different solution.​

Answer 1

• Imbibition: It is a special type of diffusion in which movement of water takes place due to difference in water molecule concentration between the adsorbant and the imbibant. For e.g., the dry plant part or dry seeds when placed in water increases in size or swells.
• Mass percentage of water imbibed by raisins can be calculated as:Mass % of water imbibed=\frac { Mass\quad of\quad water\quad absorbed\quad by\quad the\quad raisins }{ Intial\quad mass\quad if\quad raisins } X100
• Osmosis: When the solution of higher water concentration moves into the solution of lower water concentration through a semipermeable membrane, till the concentration on both the sides of the membrane is equal. This process is called osmosis.
• Hypotonic solution: When a cell (dry raisin) is dropped in water, the cell has a less water concentration than the medium in which it is kept. The water molecules will flow into the cell, and it will swell up or even can burst as in case of animal cells. Such a solution is called hypotonic solution. This is Endosmosis.
• Isotonic solution: If the medium has exactly the same water concentration as that of the cell, the water does not move either in or out of the cell, the size of cell remains the same. Such solution is called isotonic solution.
• Hypertonic solution:If the medium has lower concentration of water than the cell, the cell will lose water by osmosis and become smaller in size. Such a solution is called hypertonic solution. This is Exosmosis.
• Plasmolysis: When a cell loses water through osmosis and contracts, the contraction of the contents of the cells is away from the cell wall. This phenomenon is known as plasmolysis

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Answer 2

Answer:

refer to the pic above for ur answer

Explanation:

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