FUNCTIONS OF LEAVES 177 



189. Review Summary of Minute Structure of Leaves. 1 



General structure, distribution of 

 parenchyma, and prosenchyma 



Layers of tissue seen on a cross- 

 section 



Structure of epidermis . . . 



Structure of stomata .... 



Distribution of stomata . 



Structure and distribution of 

 chlorophyll bodies .... 



190. Review Summary of Functions of Leaves. 



fibro-vascular bundles 

 epidermis .... 

 stomata .... 

 air spaces .... 

 palisade-cells . 

 spongy parenchyma 

 waxy coating . . . 

 hairs 



f from the air . . . 

 Substances received by the leaf .... I 



[ from the soil . 



Substances manufactured by the leaf . . 



,j; , , , , f into the air 



Substances given off by the leaf ... I 



\ into the stem . . 



Mineral substances accumulated in the leaf 

 Statistics in regard to transpiration . . 

 Statistics in regard to starch-making . . 



1 Illustrate with sketches and diagrams. 



Principal uses of 



