Which of the following statements is correct ?

Options

A. Cells shrink in hypertonic solution and swell in hypotonic solution.
B. Imbibition is a special type of diffusion when water is absorbed by non living parts.
C. Most of water flow in the roots occur via the apoplast.
D. all of these.

Answer

To determine which of the statements is correct, let's analyze each statement one by one:

1. **Statement 1**: "Cell shrinks in hypertonic solution and swells in hypotonic solution."
- **Analysis**: This statement is true. In a hypertonic solution, the concentration of solutes outside the cell is higher than inside, leading to water moving out of the cell, causing it to shrink. Conversely, in a hypotonic solution, the concentration of solutes is lower outside the cell, resulting in water moving into the cell, causing it to swell.

2. **Statement 2**: "Imbibition is a special type of diffusion when water is absorbed by non-living plants."
- **Analysis**: This statement is also true. Imbibition refers to the process where water is absorbed by substances (like seeds and wood) without the involvement of living cells. It is a type of diffusion that occurs in non-living materials, leading to swelling.

3. **Statement 3**: "Most of the water flow in the roots occurs via the apoplast."
- **Analysis**: This statement is correct as well. The apoplast pathway allows water to move through the cell walls and intercellular spaces without crossing the cell membranes, facilitating efficient water movement in the roots.

Since all three statements are correct, the answer to the question is:

**Answer**: Option D - All of these statements are correct.