vi LABORATORY AND FIELD EXERCISES 



SECTION III. ANATOMY 



PAGE 



A. ANATOMY OF STEMS 41 



External Features of Woody Stems 41 



Gross Structure of Mature Stems 42 



Microscopic Structure of Woody Stems 45 



Herbaceous Stems (Dicotyledons) 50 



Herbaceous Stems (Monocotyledons) 52 



B. STRUCTURE OF ROOTS 53 



C. THE STRUCTURE OF THE LEAF 53 



SECTION IV. PHYSIOLOGY OF PLANTS 



A. PHOTOSYNTHESIS 57 



B. RESPIRATION 60 



C. TRANSPIRATION AND WATER ASCENT 61 



SECTION V. REPRODUCTION 



A. SEXUAL REPRODUCTION 64 



The Flower and its Parts 64 



Pollination in Papilionaceous Flowers 68 



Structure of Papilionaceous Flowers 69 



PART II. THE PLANT GROUPS 

 SECTION VI. THALLOPHYTES (ALGJG AND FUNGI) 



A. THE ALG.E 75 



Protococcus (Pfatrocoeciu) 75 



Chlamydomonas 76 



Spirogyra t 77 



Vaucheria 79 



(Edogonium 81 



General Study of Fresh-Water Algae 82 



Fucus vesiculosus . ... 83 



