Polymeric polysaccharide consisting of only one type of monosaccharide is :-

Options

A. Glycogen
B. Cellulose
C. Inulin
D. All of the above

Answer

To solve the question regarding which polymeric polysaccharide consists of only one type of monosaccharide, we can analyze the options provided: glycogen, cellulose, inulin, and "all of the above."

### Step-by-Step Solution:

1. **Understanding Polysaccharides**:
- Polysaccharides are large molecules made up of many monosaccharide units. They can be classified based on the type of monosaccharides they contain.

2. **Analyzing Glycogen**:
- Glycogen is a polysaccharide that serves as a form of energy storage in animals. It is composed entirely of glucose molecules.
- Therefore, glycogen is a polymeric polysaccharide consisting of only one type of monosaccharide (glucose).

3. **Analyzing Cellulose**:
- Cellulose is a structural polysaccharide found in the cell walls of plants. Like glycogen, cellulose is also made entirely of glucose units, linked in a different structural arrangement.
- Thus, cellulose also qualifies as a polymeric polysaccharide made up of only one type of monosaccharide (glucose).

4. **Analyzing Inulin**:
- Inulin is a polysaccharide that is primarily composed of fructose units. It is not made up of glucose, which means it does not consist of only one type of monosaccharide in the same way that glycogen and cellulose do.
- Therefore, inulin does not meet the criteria of the question.

5. **Conclusion**:
- Since both glycogen and cellulose are polysaccharides made up of only one type of monosaccharide (glucose), and inulin does not fit this criterion, the correct answer to the question is "all of the above" because it includes glycogen and cellulose.

### Final Answer:
**All of the above** (Glycogen, Cellulose, and Inulin).