Sheldon wrote:

So what, the bottom portion of leaves do not facilitate
photosynthesis.....

Pray tell what do you base that factoid on?

There is chlorophyll on the bottom as well as the top of all leaves.
Chlorophyll does not require direct sunlight to function. If it did,
there would be nothing growing under the canopy in a forest.

otherwise the leaves would have evolved to be
connected to their stems by little universal joints so they could
revolve 360 deg at a constant rate, like pinwheels (why would mother
nature waste 50pct of their surface area).

That is nonsense but the bottom of most leaves is where the stoma are
concentrated which is where transpiration is effected. The top of the
leaf is a more efficient at photosynthesis but the bottom still works.

Dintcha ever notice that only the top portion of leaves synchronize with the postion of the sun
(the bottom (underside) of leaves is involved with respiration).

Dintcha ever see a Compass Plant? The leaves are oriented North and
South with the large surfaces facing East and West. How silly of Mother
Nature to waste all that leaf bottom facing the Sun for half the day.

And
the sun already radiates the full color spectum of visible light
(doesn't need any help, hasn't for billions of years)...

What does that have to do with the price of milk? Plants don't use the
full spectrum.

I think that red plastic is a lot of hooey

Could be but thinking is not science. It's not even a hypothesis.

The idea that reflecting red up is a reasonable hypothesis which needs
to be proven, not rejected as "hooey" without some evidence.


js

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