Question

Common cell wall material in primary wall,
secondary wall and middle lamellum is
1) Cellulose
2) Suberin
3) Pectin
4) Lignin​

Answer 1

Answer:

the middle lamella and the primary cell wall, and many cells produce an additional layer, called the secondary wall. ... The primary wall is the cellulose-containing layer laid down by cells that are dividing and growing.