In article ,
wrote:
Sean Houtman wrote:
wrote in news:57e45678-5250-448e-b891-
:
It maybe the case that there are two locomotions driving bulbs
deeper-- one of
contractile roots but a second one of action-reaction of leaves
shooting upwards.
And the factor of the soil involved because if a clay soil is involved
contractile roots
may have a tough time of getting deeper.
It is easier to pull a rope than push it.
This is a wonderfully concise and astute reply. Too bad the recipient
doesn't understand it.
Never studied physics, eh, Sean. Newton would not be calm when
someone calls one of his laws as pushing a rope rather than pulling.
And funny, because, maybe that is what a biologist thinks of when
reading Newton's law of every action has an equal and opposite
reaction, in that you, Sean thinks of a rope being pushed or pulled.
So definitely, biophysics was not one of your talents, Sean.
Here are some experiments for Mr. Plutonium to try:
(1) Stand on the ground and push upwards on the air with your hands. How
far do your feet sink into the ground? Now think about how Newton's
laws are demonstrated by this experiment and how it relates to your
ideas about plant growth.
(2) Crouch down on the ground and slowly stand up. How far do your feet
sink into the ground? Now think about how Newton's laws are demonstrated
by this experiment and how it relates to your ideas about plant growth.
Plants don't really push out of the ground. They stay in place and the
growing structures elongate or add tissue at the growing points at the
ends/edges. Applying equal force to the air and to the ground will move
more air than ground.