BIOL 1002 Chapter : Chapter 45
Document Summary
Chapter 45:how plants respond to the environment 2/21/2014 3:28:00: plants sense and respond to different stimuli in their environment through the action of chemicals called plant hormones or growth regulators. 45-4): statoliths cause auxin to accumulate on the same side of the cell maybe, auxins and cytokinin control branching in shoot and root: (fig. 45-7), auxin suppresses lateral branching in shoot (apical. Flower when mature, under favorable conditions: roses, tomatoes, corn, long-day plants. Flower only when uninterrupted darkness is short: lettuce, spinach, iris, short-day plants. Flower only when uninterrupted darkness is long: goldenrod, mums, asters, the measuring of the hours of darkness a plant receives may be accomplished by phytochrome a- type of photopigment that detects light and darkness, fig. 45. 9: plants use pr and pfr with biological clocks to detect duration of darkness, the active form influences a response to light such as flowering. Carnivourous plants respond to prey-sundews and venus flytraps: fig.
