- University of Connecticut
- Biological Sciences
- Biological Sciences 1108
Last Modified: 2011-07-16
- auxin: what causes growth in phototropism, what causes the bend
- growth on touch or by touch
- ex. vines
- plant falls-amyloplasts rearrange-continue to grow-growth toward sky
- plant grows up (ex. plant on its side will continue to grow towards sky)
- amyloplasts account for the sideways plant to grow up
- light detected by tip of plant
- light not detected at bend point
- conclusion: cells on "dark" side lengthen or grow faster relative to counterparts on "light side"
- opaque vs. transparent cap
- growth towards light
- positive= towards light
- negative= away from light
- Darwin's experiments
- Fritz Wentz experiments
- Winslow Brigg's experiments
- auxin is produced evenly on tip of plant, but moves down unevenly
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