CONTENTS 



PAGE 



I INTRODUCTION . ..... 9 



II THE PLANT AND ITS FOOD . . . . .13 



III EVOLUTION OF CELLULAR STRUCTURE IN SIMPLE 



PLANTS . . 28 



IV THE CELLS AND THE ORGANISM .... 40 



v THE "NON-CELLULAR" TYPE OF ORGANISATION 49 



VI THE GREEN LEAF 57 



VII ROOTS AND THEIR FUNCTIONS .... 71 



VIII CORRELATION OF FUNCTION AND FORM . . 86 



IX MECHANICAL PROBLEMS AND THEIR SOLUTIONS . 90 



X SPECIAL FEATURES OF CLIMBING AND WATER 



PLANTS 107 



XI ADAPTATION 127 



XII RELATION OF PLANTS TO WATER . . .131 



XIII THE EPIPHYTES 149 



XIV THE FUNGI 161 



XV FUNGAL PARASITES 172 



XVI FLOWERING PARASITES 182 



XVII COMPOUND ORGANISMS 189 



XVIII VEGETATIVE REPRODUCTION .... 204 



XIX SEXUAL REPRODUCTION 212 



XX THE CELL-NUCLEUS AND FERTILISATION . . 226 



BIBLIOGRAPHY ....... 251 



INDEX 253 



Vii 



