STUDIES ON THE GROWTH HORMONE OF PLANTS : VI. THE DISTRIBUTION OF THE GROWTH SUBSTANCE IN PLANT TISSUES

K V Thimann1

  • 1William G. Kerckhoff Laboratories of the Biological Sciences, California Institute of Technology, Pasadena.

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Plant Hormones01:56

Plant Hormones

Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
Plant Hormones01:56

Plant Hormones

Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.