OUTLINE OF CHAPTER TWO 



THE PLANT 

 Parts of a Plant : 

 Seed 

 Root 

 Stem: 



Branches, twigs 

 Leaves 

 Blossoms : 



Calyx, sepals 



Corolla, petals 



Stamen, filament, anther, pollen 



Pistil, stigma, style, ovary 

 Duration of Plants : 

 Annual 

 Biennial 

 Perennial 



Differences in the Parts of Plants : 

 Roots : 



Taprooted, fibrous 

 Stems : 



Upright, climbing, prostrate 

 Blossoms : 



Perfect, imperfect 



Pollen carried by wind, by insects 

 Seeds : 



Scattered by plant, by wind, by animals 

 Plant Food : 



Air-derived elements : 



Carbon, oxygen, hydrogen, nitrogen indirectly through soil 

 Necessary soil-derived elements : 



Iron, calcium, magnesium, potassium, phosphorus, sulphur 



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