chapter  XII
19 Pages



Nature of the circumnutating movement - History of a germinating seed - The radicle first protrudes and circumnutates - Its tip highly sensitiveEmergence of the hypocotyl or of the epicotyl from the ground under the form of an arch - Its circum nutation and that of the cotyledons - The seedling throws up a leaf-bearing stem - The circumnutation of all the parts or organs - Modified circumnutation - Epinasty and hyponasty - Movements of climbing plants - Nyctitropic movements - Movements excited by light and gravitation - Localized sensitiveness - Resemblance between the movements of plants and animals - The tip of the radicle acts like a brain.