CONTENTS 



Chapter One 



INTRODUCTION 



The inspiration to write about growing plants (1). Science used to 

 explain growth (2). Some of the facts to be known about plants (3). 

 Guides in the form of references (4). The glossary (5). 



Chapter Two 



SEEDS AND SEEDLINGS 



Seeds are resting plants (6). Seed structure (7), Origin of seeds 

 from flowers (8). Kinds of seeds (10). How the seed develops into 

 the seedling (11). Seedlings pushing out of the soil (14). Parts of 

 the seedHng (14), 



Chapter Three 



GERMINATION OF SEEDS 



Conditions necessary for germination (15). Planting seeds to meet 

 these conditions (16). The physiology within the seed (17). Influ- 

 ence of light on seedlings (18). Planting seeds (19). Seed testing 

 (20). 



Chapter Four 



CELL STRUCTURE AND PROTOPLASM 



The parts of the cell (21). Nature and function of the cell wall (24). 

 Protoplasm (24). The nucleus (25). Chromosomes and genes (25). 

 Cell division (28). 



Chapter Five 



ROOTS 



Tap and fibrous root systems (30). Root structure (30). Food stor- 

 age in roots (37). Root hairs (38). Mycorrhiza (39). Conditions 

 favoring root growth (39). 



Chapter Six 



ABSORPTION OF WATER AND MINERAL SALTS 



Diffusion (41). Composition and concentration of the cell sap (42). 

 The soil solution (42). Movement of water and salts through the cell 

 walls and protoplasm (43). Turgor pressure (44). Absorption of 

 salts by plant energy (45). 



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