Which is a correct order ( w.r.t. imbibing capacity in decreasing order ) ?

Options

A. Agar-agar ` gt` Pectin `gt ` Protein `gt` Starch `gt` Cellulose
B. Agar-agar `gt` Protein `gt` Pectin `gt` Cellulose `gt` Starch
C. Protein `gt` Agar-agar `gt` Pectin `gt` Starch `gt ` Cellulose
D. Agar-agar `gt` Starch ` gt` Protein `gt` Cellulose `gt` Pectin

Answer

To determine the correct order of imbibing capacity in decreasing order, we need to analyze the water absorption capacity of various substances. Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Understanding Imbibing Capacity**:
- Imbibing capacity refers to the ability of a solid to absorb water. This is crucial in biological processes, especially in plants.

2. **Identifying the Substances**:
- The substances we need to consider are agar-agar, pectin, protein, starch, and cellulose.

3. **Analyzing Agar-Agar**:
- Agar-agar is known for its high water absorption capacity. It is used as a medium for culturing microorganisms, indicating its excellent imbibing properties.
- **Position**: 1st (highest capacity)

4. **Analyzing Pectin**:
- Pectin is a polysaccharide found in plant cell walls and is known for its ability to absorb water, but it does not surpass agar-agar in this capacity.
- **Position**: 2nd

5. **Analyzing Protein**:
- Proteins can also absorb water, but their imbibing capacity is generally lower than that of both agar-agar and pectin.
- **Position**: 3rd

6. **Analyzing Starch**:
- Starch, being a polysaccharide, has a lower water absorption capacity compared to proteins, pectin, and agar-agar.
- **Position**: 4th

7. **Analyzing Cellulose**:
- Cellulose, while important in plant structure, has the least imbibing capacity among the substances listed. It is less effective in absorbing water compared to starch, protein, pectin, and agar-agar.
- **Position**: 5th (lowest capacity)

8. **Final Order**:
- Based on the analysis, the correct order of imbibing capacity in decreasing order is:
1. Agar-Agar
2. Pectin
3. Protein
4. Starch
5. Cellulose

### Conclusion:
The correct order with respect to imbibing capacity in decreasing order is:
**Agar-Agar > Pectin > Protein > Starch > Cellulose**

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