The difference between the primary and secondary wall are
Primary Wall
1)Extensible layer
2)Dispersed texture of microfibrils
3)Smallest cellulosic unit micelle or microfibril
4)Cellulose 5. 2%
5)Lipid content 5—10%
6)Proteins 5%
7)Hemicellulose 50%
Image Source: public.ornl.gov/site/gallery/originals/Overview_of_Plant_Cell_Walls_-_original.jpg
Secondary Wall
1) Nonextensible layer
2)Parallel texture of microfibrils (to long axis)
3)Smallest cellulosic unit microfibril or fibril
4)Cellulose 50— 94%
5)Normally no lipid
6)Proteins very low
7)Hemicellulose 25%