Advertisements
Advertisements
Question
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A&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 had somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the firmness and increase in the size of the potato cubes placed in water.
Advertisements
Solution
Water is hypotonic to the potato cells, due to which endosmosis occurs and water enters the potato cells. The protoplasm swells up pressing tight against the cell wall. The cells are fully distended i.e. turgid. This causes the firmness and increase in the size of the potato cubes when placed in water.
RELATED QUESTIONS
Define the following:
Hypertonic solution
Name the following:
Movement of molecules from a region of high concentration to a region of low concentration.
Choose the correct answer:
Osmosis involves diffusion of ___________
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.
Give at least three uses of water to green plants
Give Reasons for the following.
Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered. Why?
Differentiate between:
Osmosis and Diffusion
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Name the following:
Condition of cell in which the cell content are shrunken.
Multiple Choice Question:
Marine fish when thrown under tap water bursts because of:
