Page 120 - Photosynthesis: The Green Miracle

Adnan Oktar

fully understood. In summary, plant growth movements are as follows:
Orientation (tropism): Reactions to stimuli such as light, gravity,
touch and water.
Bending: In leaves or flowers is a form of movement that arises as a
result of the motion of the Sun, day length, or swelling (turgor) caused by
the pressure of touch.

Morphogenetic reactions are changes that take place in plant tis-
sue in reaction to length of daylight.
Photoperiodism: Changes taking place in response to light duration
and the length of day or night. 54
Geotropism: The lengthening, downward movement of the plant’s
main taproots in the direction of gravity.
Thigmotropism: A reaction to being touched. As we have already
seen in some detail, plants display electrical and chemical reactions to ex-
ternal stimuli. In addition, they also exhibit a tendency to bend toward

any support touching them. Creepers such as the Passionflower are exam-
ples of this. 55
Hydrotropism: Plant roots’ turning in the direction of water. In soil
where water is not abundant, plant roots extend towards lower layers in
an exploratory manner. 56
Every organ in a plant rooted upright in the earth moves in a differ-
ent direction, in accord with need—an extraordinary state of affairs.

Scientists still cannot explain by what decision the different tissues of a
plant move in different directions. The above-ground portions of a plant,
for instance, turn towards the light. But the main root, as described above,
extends downwards under the effect of gravity. Sprouts, on the other
hand, head upward, opposite to gravity. It’s as if there was polarization
57
inside the plant. Even the very smallest portion of the plant has knowl-
edge of what part should develop in which direction. For instance, even
if you plant a branch upside down, roots will still begin sprouting from
the downward end. In other words, as the roots of a plant always head
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