PLANT CELL MEMBRANES 



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Figure 105. Detection and estimation of plant constituents: presence of cellulose in 

 lignin, A, lignin; B, cellulose from lignin; C, cotton cellulose; detection of cellulose in 

 young cotton fibers, D, 10; E, 25; F, 30; G, 35; H, 50-day-old fibers; I, same as D after 

 extraction; presence of cellulose in Valonia cytoplasm, J, original cytoplasm; K, cellulose 

 obtained from cytoplasm by extraction; L, cellulose from cell wall. 



