Page 27 - Photosynthesis: The Green Miracle
P. 27
Harun Yahya
on either side of the main vein, which means the placement of that mid-
rib is crucial for balancing the leaf’s weight. The midrib’s ability to sup-
2
port weight decreases with distance from where it attaches to the plant,
and its leverage increases proportionally. As an analogy, if you pick up a
heavy book in one hand and then extend your arm, you will find that
your ability to hold the book is diminished, and that the book’s apparent
weight has increased. However, since the main midrib passes down the
exact center of the leaf, the weight it must support is distributed equally. 3
This is no ordinary phenomenon, because no such balance can come into
being by chance. Can bricks possibly come together by coincidence to
form a building that will not collapse? Or can any bridge remain upright
The main veins or midribs permit leaves to obtain the maximum
benefit from solar rays by maintaining their rigidity. Other
veins on the surface of the leaf act as a skeleton for its
tissues.
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