I have made the observation that most every plant when it shoots from
its seed
with its first leaves, that these first leaves are rarely (perhaps
never) the same as
what all the other leaves of this plant matures into. Would it not save
the plant
some energy in its early growing if all the leaves were the same from
birth to
maturity?

Anyway, does anyone know if any plant exists wherein its first leaves
are
no different from any other of its leaves?

And the question I am mostly interested in is whether these first leaf
are an
evolutionary vestiges such as human vestiges of gill slits. So are these
first
leaves vestiges of all plants that can be traced back to some ancestral
first
plant. Or, instead of being evolutionary vestiges, are the first leaves
different
from later leaves as in animals the fetus is different from the later
growing
animal.

What I am trying to reconcile in thought is why would a plant invest
energy in
its first leaves of leaves that are very much different from all later
leaves, when
it probably would be better for the plant if all of its leaves during
its entire lifetime were one and the same type of leaf.

Archimedes Plutonium,
whole entire Universe is just one big atom where dots of the
electron-dot-cloud are galaxies

I have made the observation that most every plant when it shoots from its
seed with its first leaves, that these first leaves are rarely (perhaps never)
the same as what all the other leaves of this plant matures into.

Either you slept right through high school biology, or you should sue the
teacher. The first leaves on nearly every one of the flowering plants are not
true leaves. They are the cotyledons, or seed leaves. They come from the
endosperm in the seed. They contain concentrations of sugar and/or starch to
feed the baby plant until it has enough roots & true leaves to feed itself. If
you want an analogy to the animal world, it is the exact equivalent of the yolk
sac on a baby fish.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)