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I seem to remember learning the pecise reason why plants both respond to sunlight and to gravity during my Freshman year Biology class in high school. I remembe
by Avitas 14y ago
I seem to remember learning the pecise reason why plants both respond to sunlight and to gravity during my Freshman year Biology class in high school. I remember that it is due to a single plant hormone that stunts the elongation of cells. I think it begins with an 'a'.
Aren't the mechanics of this well-known?
- cezary 14y agoAuxin, I did a science project on this in 5th or 6th grade. My father helped me rig up a centrifuge-like apparatus that would spin seeds at what was supposed to simulate greater than earth gravity. I remember doing research (reading) about auxins and coming to the conclusion that higher gravity would stunt plant height.
- alberich 14y agoAnd what happened to the seeds on your science project? :)
- nodata 14y agoFor the sunlight part: sunlight inhibits growth on the sun-facing side of the plant, and so the flower faces towards the sun.
- Tloewald 14y agoExcept this works for buried seeds and seeds germinated in the dark.