Plants' major cell walls contain xyloglucan, a hemicellulose with side chains that contain xylose, galactosyl, and fucosyl substituents.
References
Piqué, N., Gómez-Guillén, M., & Montero, M. (2018). Xyloglucan, a plant polymer with barrier protective properties over the mucous membranes: An overview. International Journal of Molecular Sciences, 19(3), 673. Click here to redirect detail information.