B 



6 



PLATE 68. Seed Structure. 



A. Transverse Section, Wheat. F. Pericarp or fruit layers. 1. Epicarp. 

 2. Mesocarp. 3. Endocarp. E. Seed Tissues. 4. Seed coats consolidated with 

 perisperm layer. 4. Endosperm, aleurone layer. 6. Endosperm, parenchyma 

 containing starch. 



B. Powdered Wheat. 1. Epicarp tissue. 2 Perisperm tissue. 3. Seed coat 

 tissue. 4. Aleurone cells of the endosperm. 5. Unicellular trichome from epi- 

 carp. C. Starch. 



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