Explanation:
The increase in sugar level inside a potato during a potato experiment is due to the movement of water from outside to inside the potato. This process is called osmosis. Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane.
Here is a detailed explanation of how osmosis causes the increase in sugar level inside the potato:
- Osmosis: Osmosis is the process by which water molecules move from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane. In this case, the solute refers to the sugar molecules.
- Semi-permeable membrane: The potato's cell membrane acts as a semi-permeable membrane. It allows the passage of water molecules but restricts the movement of larger solute molecules such as sugar.
- Sugar solution: The potato is placed in a sugar solution. The sugar solution has a higher solute concentration compared to the potato cells.
- Concentration gradient: There is a concentration gradient between the sugar solution and the potato cells. The sugar molecules are more concentrated in the sugar solution compared to the potato cells.
- Osmotic pressure: Due to the higher solute concentration in the sugar solution, there is an osmotic pressure created. This osmotic pressure drives the movement of water molecules from outside to inside the potato cells.
- Osmosis in potato cells: As water moves into the potato cells through osmosis, it causes an increase in the overall water content inside the cells. This increase in water content leads to an increase in the sugar level inside the potato.
In conclusion, the sugar level inside a potato increases during a potato experiment due to the movement of water from outside to inside the potato cells through osmosis.

The increase in sugar level inside a potato in a potato experiment is due to the movement of water from outside to inside the potato.



When a potato is placed in a sugar solution, there is a difference in the concentration of solute (sugar) on either side of the potato cells. The movement of water across a semi-permeable membrane, such as the potato cell membrane, occurs from an area of lower concentration of solute to an area of higher concentration of solute. This process is known as osmosis.

Key Points:
- Osmosis is the movement of water molecules from an area of higher water concentration to an area of lower water concentration through a semi-permeable membrane.
- In this experiment, the sugar solution has a higher concentration of solute (sugar) compared to the potato cells.
- The potato cell membrane is semi-permeable, allowing the passage of water molecules but not solute molecules like sugar.
- As a result, water molecules move from the area of lower solute concentration (inside the potato cells) to the area of higher solute concentration (the sugar solution) through osmosis.
- This causes the potato to absorb water from the sugar solution, leading to an increase in the water content and overall mass of the potato.
- Since the sugar solution outside the potato has a higher concentration of solute, the water moves into the potato cells to balance the concentration on both sides of the potato cell membrane.
- As a result of the movement of water into the potato cells, the sugar level inside the potato increases.

Therefore, the correct answer is option 'B' - movement of water from outside to inside the potato.