TABLE OF CONTENTS 



PAGE 



Preface vii 



EXERCISE 



I. The Protoplast 1 



II. The Cell Wall 7 



III. Meristems 1^ 



IV. Problems in the Classification of Cell Types, 



Tissues and Tissue Systems in Vascular 

 Plants (Including Tabular Summary of Main 



Cell Types in Seed Plants) 32 



V. The Epidermis 45 



VI. Parenchyma Cells 57 



VII. Collenchyma Cells 62 



VIII. Sclereides 67 



IX. Fibers 73 



X. Tracheary Elements 80 



XI. Sieve-tube Elements 93 



XTT. The Stem 101 



XIIT. The Leaf 123 



XIV. The Root 130 



Appendix 139 



Index 143 



IX 



56399 



