La germination des plantes

Title: La germination des plantes
Translated Title: 
The germination of plants
Abstract: 
The Germination of Plants (Monocots and broadleaves). The projection at normal speed (16 images per second) of the views taken at regular intervals (a photograph every 4,5 or 6 minutes) renders perceptible a very slow movement (growth of the plants). During spring, the seed of the pea absorbs water; the reserve material get transformed into food and nourish the young plantlet. The root develops. The root elongates from its extremity; it penetrates in the soil with a helical movement (the movement is accelerated 4800 times). Germination of a bean. Notice the development of the root and of its rootlets and then the separation of the two cotyledons of the seed. Germination of a wheat seed. The rootlets elongate in the soil. Then the absorbing hairs appear. They take from the soil the water and necessary salts for the nutrition of a plant. The End.