Here's why:
* Cellulose is a structural polysaccharide: It provides rigidity and support to the plant cell wall, allowing plants to stand upright and maintain their shape.
* Other organisms with cellulose: While plants are the most prominent, some other organisms also have cellulose in their cell walls:
* Some bacteria: Certain bacteria, particularly those involved in the breakdown of plant matter, can synthesize cellulose.
* Protists: Some protists, like algae, also possess cellulose in their cell walls.
* Fungi: While fungi do have cell walls, they are typically made of chitin, not cellulose.
In summary, plants are the primary organisms with cellulose in their cell walls, but other organisms, like some bacteria and protists, can also produce it.
