The correct answer is: A. Imbibition.
Imbibition is the absorption of water by a solid. It is a physical process that occurs when water molecules are attracted to the surface of a solid and then enter the solid through small pores. The water molecules then fill up the pores and cause the solid to swell.
Wood is a porous material, so it is susceptible to imbibition. When wood absorbs water, it swells and becomes more difficult to open or close. This is why wooden doors are often difficult to open or close during the rainy season.
Plasmolysis is the shrinkage of a cell’s cytoplasm due to the loss of water. It occurs when a cell is placed in a solution that has a higher concentration of solutes than the cell’s cytoplasm. The water molecules in the cell’s cytoplasm will then move out of the cell in order to equalize the concentration of solutes. This causes the cytoplasm to shrink and the cell to plasmolyse.
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. It is a passive process that does not require energy. Diffusion occurs in all living things and is essential for many biological processes.
Osmosis is the movement of water molecules from an area of high water concentration to an area of low water concentration. It is a passive process that does not require energy. Osmosis is important for many biological processes, such as the transport of nutrients and waste products across cell membranes.
In conclusion, the correct answer to the question “During rainy season wooden doors are difficult to open or closure because of ?” is A. Imbibition.