Important constituent of cell wall is

Options

A. lipid
B. cellulose
C. protein
D. vitamin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the important constituent of the cell wall. It's essential to know what makes up the cell wall in various organisms.

2. **Identifying Organisms with Cell Walls**: Cell walls are primarily found in plants, fungi, and bacteria. Each of these organisms has a different composition of their cell walls.

3. **Composition of Plant Cell Walls**: In plants, the primary component of the cell wall is cellulose. Cellulose is a polysaccharide made up of glucose units and provides structural support to the plant.

4. **Other Components**: While cellulose is the main component, plant cell walls may also contain hemicellulose, lignin, and pectin. However, cellulose is the most significant and abundant constituent.

5. **Checking the Options**: The question likely provides multiple-choice options. Based on the knowledge of cell wall composition:
- Option 1: Lipids - Incorrect, as lipids are not a major component of cell walls.
- Option 2: Cellulose - Correct, as it is the primary constituent of plant cell walls.
- Option 3: Protein - Incorrect, while proteins may be present, they are not the main component.
- Option 4: Vitamin - Incorrect, as vitamins are not constituents of cell walls.

6. **Conclusion**: The important constituent of the cell wall is cellulose.

**Final Answer**: The important constituent of the cell wall is **cellulose**.

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