Plant cell wall is mainly composed of A. SugarsB. CelluloseC. ProteinsD. Lipids

The correct answer is B. Cellulose.

Explanation:
Plant Cell Wall Composition:

The plant cell wall is primarily made of cellulose, which is a polysaccharide consisting of long chains of glucose molecules. Cellulose forms a rigid structure that provides strength and support to the plant cell.
Other Components:

While cellulose is the main component, the cell wall also contains other substances, such as:
Hemicellulose: Another type of polysaccharide that helps to bind cellulose fibers together.
Pectin: A substance that helps to cement cells together and provides flexibility to the cell wall.
Proteins: Although present, they are not the main structural component.
Lignin: Found in some plant cells, it adds rigidity and is especially abundant in woody plants.
Incorrect Options:

A. Sugars: While cellulose is made from sugars (glucose), the term "sugars" is too broad and not specific to the composition of the cell wall.
C. Proteins: Proteins may be present in the cell wall, but they are not the main structural component.
D. Lipids: Lipids are generally not a significant part of the cell wall structure.
Conclusion:
In summary, cellulose is the primary component of the plant cell wall, providing essential structural support and rigidity.