Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 10

Plant Cell Walls. Distinguish between the terms in each of the following pairs with respect to the structure of the plant cell wall, and indicate the significance of each.
(a)Primary wall; secondary wall
(b)Cellulose; hemicellulose
(c)Xylan; xyloglucan
(d)Extensin; lignin
(e)Desmotubule; annulus
(f)Plasmodesma; gap junction