Which of the following is least likely to be the component of the cell wall in higher plants ?

Options

A. Polymer of glucose
B. Polymer of lipid
C. Hemicellulose
D. Polymer of amino acids

Answer

To determine which of the following components is least likely to be part of the cell wall in higher plants, we need to analyze the common components of plant cell walls.

### Step-by-Step Solution:

1. **Understanding Plant Cell Wall Composition**:
- The primary components of the cell wall in higher plants include cellulose, hemicellulose, and pectin. These substances provide structural support and protection to the plant cells.

2. **Identifying Cellulose**:
- Cellulose is a polymer of glucose and is the main structural component of the plant cell wall. It is highly abundant in higher plants.

3. **Considering Hemicellulose**:
- Hemicellulose is another important component of the cell wall. It is a heterogeneous group of polysaccharides that provide additional support and structure.

4. **Examining Pectin**:
- Pectin is a polysaccharide that is rich in galacturonic acid and is found in the middle lamella and primary cell walls. It helps in cell adhesion and provides flexibility.

5. **Analyzing Other Components**:
- While cellulose, hemicellulose, and pectin are integral to the plant cell wall, components like lignin and proteins may also be present but are not primary structural components.

6. **Identifying the Least Likely Component**:
- Among the options provided, if there is a mention of "polymer of lipids," it is important to note that lipids, such as triglycerides and phospholipids, are not components of the plant cell wall. Instead, they are more commonly found in animal cells.

7. **Conclusion**:
- Therefore, the component that is least likely to be part of the cell wall in higher plants is a "polymer of lipids."

### Final Answer:
The least likely component of the cell wall in higher plants is **polymer of lipids**.