A.  Light:  The Role of Light and Gibberellin in Lettuce Seed Germination

B.  Gravity:  Gravitropism in the Stems of Wisconsin Fast Plant Seedlings

C.  Light:  The Role of Light in Phototropism

D.  Light:  Making Comparisons between Light-Grown Plants and Etiolated Plants

E.  Cytokinins and Delayed Leaf Senescence in Wheat Leaves

G.  Ethylene, Epinasty and Fruit Ripening

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